• prof. dr hab. Maria Czaja
Stanowisko: Profesor
Jednostka: Instytut Nauk o Ziemi
Adres: 41-200 Sosnowiec, ul. Będzińska 60
Piętro: 12, laboratorium
Numer pokoju: 1215, 027
Telefon: (32) 3689 488
E-mail: maria.czaja@us.edu.pl
Spis publikacji: Spis wg CINiBA
Spis publikacji: Spis wg OPUS
Scopus Author ID: 7004368809
Publikacje z bazy Scopus
2022
Krzykawski, T.; Szopa, K.; Niedźwiedzki, R.; Setkiewicz, K.; Czaja, M. B.
Chemical Diversity of Teeth and Bone Fragments from a Newly Discovered Upper Muschelkalk Bone Bed from Silesia, Poland Journal Article
In: Minerals, vol. 12, no. 4, 2022, ISSN: 2075163X.
@article{2-s2.0-85128199423,
title = {Chemical Diversity of Teeth and Bone Fragments from a Newly Discovered Upper Muschelkalk Bone Bed from Silesia, Poland},
author = { T. Krzykawski and K. Szopa and R. Niedźwiedzki and K. Setkiewicz and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85128199423&doi=10.3390%2fmin12040469&partnerID=40&md5=60b069250842a02a24637a720f288274},
doi = {10.3390/min12040469},
issn = {2075163X},
year = {2022},
date = {2022-01-01},
journal = {Minerals},
volume = {12},
number = {4},
publisher = {MDPI},
abstract = {The new exposure of the Upper Muschelkalk clays and dolomites located south of Kalety (Tarnogórski District; Silesia; Poland) provided numerous remains of vertebrates represented by teeth, scales, long bones, and coprolites. Despite the influence of hydrothermal processes leading to dolomitization and Zn-Pb deposit formation, the preservation of fossil remains is good. The taxonomic diversity and accumulation of vertebrate debris in the dolomite are similar to other “bone beds” from the Muschelkalk and the Lower Keuper units. The SEM-EDS, EMP-WDS, and XRD analyses confirm that the examined remains consist of hydroxylapatite containing carbonate ions. Most vertebrate teeth as well as some bone fragments show zoning in the BSE imaging. In tooth cross-sections, three or two zones are preserved: (I) the outermost zone, associated with diagenetic mineralization of enameloid apatite, (II) a intermediate zone (orthodentine), and (III) the most porous internal zone (osteodentine). Decreasing P, Ca, Sr in the composition of the apatite which forms successive zones, is visible from the most external to the central part. Selective diagenetic substitution and adsorption of some elements by apatite crystals can allow recognition of the genetic origin of highly damaged or transported fragments scattered in the sedimentary layers. The chemical behavior of bioapatite, from deposition to digenesis, shows its useful role for identification of the formation process and potential, younger changes (e.g.; hydrothermal overprint). The X-ray diffraction data, particularly cell parameters “a” and “c”, can determine the degree of crystallinity and/or diagenesis. Moreover, correlation between some elements/ions (e.g.; Sr; Ba; Ca; Mg; F; OH) can be helpful for the identification of the fossil type, especially if the bones are small and incomplete. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The new exposure of the Upper Muschelkalk clays and dolomites located south of Kalety (Tarnogórski District; Silesia; Poland) provided numerous remains of vertebrates represented by teeth, scales, long bones, and coprolites. Despite the influence of hydrothermal processes leading to dolomitization and Zn-Pb deposit formation, the preservation of fossil remains is good. The taxonomic diversity and accumulation of vertebrate debris in the dolomite are similar to other “bone beds” from the Muschelkalk and the Lower Keuper units. The SEM-EDS, EMP-WDS, and XRD analyses confirm that the examined remains consist of hydroxylapatite containing carbonate ions. Most vertebrate teeth as well as some bone fragments show zoning in the BSE imaging. In tooth cross-sections, three or two zones are preserved: (I) the outermost zone, associated with diagenetic mineralization of enameloid apatite, (II) a intermediate zone (orthodentine), and (III) the most porous internal zone (osteodentine). Decreasing P, Ca, Sr in the composition of the apatite which forms successive zones, is visible from the most external to the central part. Selective diagenetic substitution and adsorption of some elements by apatite crystals can allow recognition of the genetic origin of highly damaged or transported fragments scattered in the sedimentary layers. The chemical behavior of bioapatite, from deposition to digenesis, shows its useful role for identification of the formation process and potential, younger changes (e.g.; hydrothermal overprint). The X-ray diffraction data, particularly cell parameters “a” and “c”, can determine the degree of crystallinity and/or diagenesis. Moreover, correlation between some elements/ions (e.g.; Sr; Ba; Ca; Mg; F; OH) can be helpful for the identification of the fossil type, especially if the bones are small and incomplete. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Kądziołka-Gaweł, M.; Dulski, M.; Czaja, M. B.; Krzykawski, T.; Szubka, M.
A multi-analytical approach for the analysis of cation distribution in a aluminoceladonite structure Journal Article
In: Acta Geologica Polonica, vol. 72, no. 3, pp. 353-368, 2022, ISSN: 00015709.
@article{2-s2.0-85139797575,
title = {A multi-analytical approach for the analysis of cation distribution in a aluminoceladonite structure},
author = { M. Kądziołka-Gaweł and M. Dulski and M.B. Czaja and T. Krzykawski and M. Szubka},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139797575&doi=10.24425%2fagp.2022.140430&partnerID=40&md5=599a21fd2a55de8dc90167ee4ef61efa},
doi = {10.24425/agp.2022.140430},
issn = {00015709},
year = {2022},
date = {2022-01-01},
journal = {Acta Geologica Polonica},
volume = {72},
number = {3},
pages = {353-368},
publisher = {Polska Akademia Nauk},
abstract = {In this paper cation arrangement in two samples of aluminoceladonite, emerald-green and dark-green were studied by Mössbauer, Raman and X-ray photoelectron spectroscopies. The X-ray photoelectron spectroscopy (XPS) spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p, and O1s core levels provided information, for the first time highlighting a route to identify the position of Si, Al, K, and Fe cations in a structure of layered silicates. The XPS analysis showed the presence of Al in tetrahedral and octahedral coordination while the K2p line indicated the possibility of K+ substitution by other cations in interlayer sites. Mössbauer spectroscopy provided information about crystal chemistry with respect to the local electronic and geometric environment around the Fe atom and to distortions of the polyhedra. It turned out that iron was located mostly in the cis-octahedra position wherein about 75% of iron appeared in the form of Fe3+. The most preferred cation combinations around Fe corresponded to 3Fe3+ ions and MgFe2+Fe3+/2MgFe3+. Raman spectroscopy illustrated aluminium substitution in silicon and iron positions wherein the concentration of the aluminium determined the degree of structural distortion within the layered system. These isomorphic substitutions implied a typical band arrangement in the hydroxyl region, which has not been observed in celadonites so far. © 2022 Polish Academy of Sciences. All rights reserved.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In this paper cation arrangement in two samples of aluminoceladonite, emerald-green and dark-green were studied by Mössbauer, Raman and X-ray photoelectron spectroscopies. The X-ray photoelectron spectroscopy (XPS) spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p, and O1s core levels provided information, for the first time highlighting a route to identify the position of Si, Al, K, and Fe cations in a structure of layered silicates. The XPS analysis showed the presence of Al in tetrahedral and octahedral coordination while the K2p line indicated the possibility of K+ substitution by other cations in interlayer sites. Mössbauer spectroscopy provided information about crystal chemistry with respect to the local electronic and geometric environment around the Fe atom and to distortions of the polyhedra. It turned out that iron was located mostly in the cis-octahedra position wherein about 75% of iron appeared in the form of Fe3+. The most preferred cation combinations around Fe corresponded to 3Fe3+ ions and MgFe2+Fe3+/2MgFe3+. Raman spectroscopy illustrated aluminium substitution in silicon and iron positions wherein the concentration of the aluminium determined the degree of structural distortion within the layered system. These isomorphic substitutions implied a typical band arrangement in the hydroxyl region, which has not been observed in celadonites so far. © 2022 Polish Academy of Sciences. All rights reserved.
2021
Czaja, M. B.; Lisiecki, R.; Juroszek, R.; Krzykawski, T.
Luminescence properties of tetrahedral coordinated mn2+; genthelvite and willemite examples Journal Article
In: Minerals, vol. 11, no. 11, 2021, ISSN: 2075163X, (3).
@article{2-s2.0-85118206845,
title = {Luminescence properties of tetrahedral coordinated mn2+; genthelvite and willemite examples},
author = { M.B. Czaja and R. Lisiecki and R. Juroszek and T. Krzykawski},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118206845&doi=10.3390%2fmin11111215&partnerID=40&md5=051fcc57b4ba4164f67dc932f01c9e08},
doi = {10.3390/min11111215},
issn = {2075163X},
year = {2021},
date = {2021-01-01},
journal = {Minerals},
volume = {11},
number = {11},
publisher = {MDPI},
abstract = {The cause of the split of4A4E(4G) Mn2+ excited level measured on minerals spectra is discussed. It is our view that ∆E = |4E(4G) − 4A(4G)| should be considered an important spectroscopic parameter. Among the possible reasons for the energy levels splitting taken under consideration, such as the covalent bond theory, the geometric deformation of the coordination polyhedron and the lattice site’s symmetry, the first one was found to be inappropriate. Two studied willemite samples showed that the impurities occur in one of the two available lattice sites differently in both crystals. Moreover, it was revealed that the calculated crystal field Dq parameter can indicate which of the two non-equivalent lattice sites positions in the willemite crystal structure was occupied by Mn2+ . The above conclusions were confirmed by X-ray structure measurements. Significant differences were also noted in the Raman spectra of these willemites. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The cause of the split of4A4E(4G) Mn2+ excited level measured on minerals spectra is discussed. It is our view that ∆E = |4E(4G) − 4A(4G)| should be considered an important spectroscopic parameter. Among the possible reasons for the energy levels splitting taken under consideration, such as the covalent bond theory, the geometric deformation of the coordination polyhedron and the lattice site’s symmetry, the first one was found to be inappropriate. Two studied willemite samples showed that the impurities occur in one of the two available lattice sites differently in both crystals. Moreover, it was revealed that the calculated crystal field Dq parameter can indicate which of the two non-equivalent lattice sites positions in the willemite crystal structure was occupied by Mn2+ . The above conclusions were confirmed by X-ray structure measurements. Significant differences were also noted in the Raman spectra of these willemites. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Kądziołka-Gaweł, M.; Czaja, M. B.; Dulski, M.; Krzykawski, T.; Szubka, M.
Impact of high temperatures on aluminoceladonite studied by Mössbauer, Raman, X-ray diffraction and X-ray photoelectron spectroscopy Journal Article
In: Mineralogy and Petrology, vol. 115, no. 4, pp. 431-444, 2021, ISSN: 09300708, (1).
@article{2-s2.0-85106324550,
title = {Impact of high temperatures on aluminoceladonite studied by Mössbauer, Raman, X-ray diffraction and X-ray photoelectron spectroscopy},
author = { M. Kądziołka-Gaweł and M.B. Czaja and M. Dulski and T. Krzykawski and M. Szubka},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106324550&doi=10.1007%2fs00710-021-00753-z&partnerID=40&md5=beda3ff9d1d83148d327c52313b16d36},
doi = {10.1007/s00710-021-00753-z},
issn = {09300708},
year = {2021},
date = {2021-01-01},
journal = {Mineralogy and Petrology},
volume = {115},
number = {4},
pages = {431-444},
publisher = {Springer},
abstract = {Mössbauer, Raman, X-ray diffraction and X-ray photoelectron spectroscopies were used to examine the effects of temperature on the structure of two aluminoceladonite samples. The process of oxidation of Fe2+ to Fe3+ ions started at about 350 °C for the sample richer in Al and at 300 °C for the sample somewhat lower Al-content. Mössbauer results show that this process may be associated with dehydroxylation or even initiate it. The first stage of dehydroxylation takes place at a temperature > 350 °C when the adjacent OH groups are replaced with a single residual oxygen atom. Up to ~500 °C, Fe ions do not migrate from cis-octahedra to trans-octahedra sites, but the coordination number of polyhedra changes from six to five. This temperature can be treated as the second stage of dehydroxylation. The temperature dependence on the integral intensity ratio between bands centered at ~590 and 705 cm−1 (I590/I705) clearly reflects the temperature at which six-coordinated polyhedra are transformed into five-coordinated polyhedra. X-ray photoelectron spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p and O1s core levels, highlighted a route to identify the position of Si, Al, K and Fe cations in a structure of layered silicates with temperature. All the measurements show that the sample with a higher aluminum content and a lower iron content in octahedral sites starts to undergo a structural reorganization at a relatively higher temperature than the less aluminum-rich sample does. This suggests that iron may perform an important role in the initiation of the dehydroxylation of aluminoceladonites. © 2021, The Author(s).},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mössbauer, Raman, X-ray diffraction and X-ray photoelectron spectroscopies were used to examine the effects of temperature on the structure of two aluminoceladonite samples. The process of oxidation of Fe2+ to Fe3+ ions started at about 350 °C for the sample richer in Al and at 300 °C for the sample somewhat lower Al-content. Mössbauer results show that this process may be associated with dehydroxylation or even initiate it. The first stage of dehydroxylation takes place at a temperature > 350 °C when the adjacent OH groups are replaced with a single residual oxygen atom. Up to ~500 °C, Fe ions do not migrate from cis-octahedra to trans-octahedra sites, but the coordination number of polyhedra changes from six to five. This temperature can be treated as the second stage of dehydroxylation. The temperature dependence on the integral intensity ratio between bands centered at ~590 and 705 cm−1 (I590/I705) clearly reflects the temperature at which six-coordinated polyhedra are transformed into five-coordinated polyhedra. X-ray photoelectron spectra obtained in the region of the Si2p, Al2p, Fe2p, K2p and O1s core levels, highlighted a route to identify the position of Si, Al, K and Fe cations in a structure of layered silicates with temperature. All the measurements show that the sample with a higher aluminum content and a lower iron content in octahedral sites starts to undergo a structural reorganization at a relatively higher temperature than the less aluminum-rich sample does. This suggests that iron may perform an important role in the initiation of the dehydroxylation of aluminoceladonites. © 2021, The Author(s).
2020
Czaja, M. B.; Lisiecki, R.; Kądziołka-Gaweł, M.; Winiarski, A.
Some complementary data about the spectroscopic properties of manganese ions in spodumene crystals Journal Article
In: Minerals, vol. 10, no. 6, pp. 1-17, 2020, ISSN: 2075163X, (2).
@article{2-s2.0-85090735799,
title = {Some complementary data about the spectroscopic properties of manganese ions in spodumene crystals},
author = { M.B. Czaja and R. Lisiecki and M. Kądziołka-Gaweł and A. Winiarski},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090735799&doi=10.3390%2fmin10060554&partnerID=40&md5=3e79dca36d516c092a1dbfabf39971e7},
doi = {10.3390/min10060554},
issn = {2075163X},
year = {2020},
date = {2020-01-01},
journal = {Minerals},
volume = {10},
number = {6},
pages = {1-17},
publisher = {MDPI AG},
abstract = {The color change of the pink and colorless LiAlSi2O6 spodumene crystal due to irradiation and heating is explained. The hypothesis about the change of Mn3+ to Mn4+ after irradiation was rejected. For the studied crystals, it was shown that both Mn2+ and Mn3+ occupy the M2 (not the M1) crystal site. Spodumene crystals which are primary pink (kunzite) contain Mn3+ (and Mn2+) at the M1 site. By contrast, those that become pink due to irradiation and heating contain Mn3+ and Mn2+ at the M2 site. The emission band of the former is 625 nm, and for the latter, it is 591 nm. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The color change of the pink and colorless LiAlSi2O6 spodumene crystal due to irradiation and heating is explained. The hypothesis about the change of Mn3+ to Mn4+ after irradiation was rejected. For the studied crystals, it was shown that both Mn2+ and Mn3+ occupy the M2 (not the M1) crystal site. Spodumene crystals which are primary pink (kunzite) contain Mn3+ (and Mn2+) at the M1 site. By contrast, those that become pink due to irradiation and heating contain Mn3+ and Mn2+ at the M2 site. The emission band of the former is 625 nm, and for the latter, it is 591 nm. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Juroszek, R.; Czaja, M. B.; Lisiecki, R.; Krüger, B.; Hachuła, B.; Galuskina, I. O.
Spectroscopic and structural investigations of blue afwillite from Ma'ale Adummim locality, Palestinian Autonomy Journal Article
In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol. 227, 2020, ISSN: 13861425, (5).
@article{2-s2.0-85075369797,
title = {Spectroscopic and structural investigations of blue afwillite from Ma'ale Adummim locality, Palestinian Autonomy},
author = { R. Juroszek and M.B. Czaja and R. Lisiecki and B. Krüger and B. Hachuła and I.O. Galuskina},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075369797&doi=10.1016%2fj.saa.2019.117688&partnerID=40&md5=2c3ff99db7dd40a08668646c52454be7},
doi = {10.1016/j.saa.2019.117688},
issn = {13861425},
year = {2020},
date = {2020-01-01},
journal = {Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy},
volume = {227},
publisher = {Elsevier B.V.},
abstract = {Until now, only the colourless crystals of mineral afwillite, Ca3(HSiO4)2·2H2O, were known from several localities around the world. Present work focuses on blue afwillite counterparts from the Ma'ale Adummim locality in Palestine. Using the wide spectrum of analytical methods we attempted to identify the causes of this unusual colour. Structural investigation confirms the presence of two tetrahedral SiO3OH units connected by hydrogen bonds. The Raman spectrum of afwillite, obtained for the first time, shows the increased number of bands in the range of 785-970 cm-1, whose assignation was correlated with the presence of two different kinds of structural units: (SiO3OH)3- and its deprotonated counterpart (SiO4)4-. The heating process at 250 °C, in addition to the colour changes from blue to pastel green, shows the intensity reduction and disappearing of some Raman bands attributed mainly to SiO3OH units. The IR investigation confirms also the presence of that unit and provides information that the position and designation of infrared bands above ∼2300 cm-1 is related to the strength of hydrogen bonds within the structure. The stretching and bending OH vibrations of afwillite sample show the partial shift to the lower spectral frequencies after the H/D isotopic exchange in OH or H2O groups. Based on the results of the electron absorption and luminescence analyses it has been proposed that the blue colour of afwillite is caused by hole oxygen defect, most probably SiO3 -. © 2019 The Authors},
note = {5},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Until now, only the colourless crystals of mineral afwillite, Ca3(HSiO4)2·2H2O, were known from several localities around the world. Present work focuses on blue afwillite counterparts from the Ma'ale Adummim locality in Palestine. Using the wide spectrum of analytical methods we attempted to identify the causes of this unusual colour. Structural investigation confirms the presence of two tetrahedral SiO3OH units connected by hydrogen bonds. The Raman spectrum of afwillite, obtained for the first time, shows the increased number of bands in the range of 785-970 cm-1, whose assignation was correlated with the presence of two different kinds of structural units: (SiO3OH)3- and its deprotonated counterpart (SiO4)4-. The heating process at 250 °C, in addition to the colour changes from blue to pastel green, shows the intensity reduction and disappearing of some Raman bands attributed mainly to SiO3OH units. The IR investigation confirms also the presence of that unit and provides information that the position and designation of infrared bands above ∼2300 cm-1 is related to the strength of hydrogen bonds within the structure. The stretching and bending OH vibrations of afwillite sample show the partial shift to the lower spectral frequencies after the H/D isotopic exchange in OH or H2O groups. Based on the results of the electron absorption and luminescence analyses it has been proposed that the blue colour of afwillite is caused by hole oxygen defect, most probably SiO3 -. © 2019 The Authors
2019
Czaja, M. B.; Lisiecki, R.
Luminescence of agrellite specimen from the Kipawa River locality Journal Article
In: Minerals, vol. 9, no. 12, 2019, ISSN: 2075163X, (3).
@article{2-s2.0-85076231159,
title = {Luminescence of agrellite specimen from the Kipawa River locality},
author = { M.B. Czaja and R. Lisiecki},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076231159&doi=10.3390%2fmin9120752&partnerID=40&md5=c7b0b63e649adebb69afa768bec9434c},
doi = {10.3390/min9120752},
issn = {2075163X},
year = {2019},
date = {2019-01-01},
journal = {Minerals},
volume = {9},
number = {12},
publisher = {MDPI AG},
abstract = {Using steady-state luminescence measurements, the luminescence spectra of Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Dy3+, Er3+ and Yb3+ for the agrellite sample from the Kipawa River region have been measured. The emission spectra of Eu3+ and Dy3+ next to those of Sm3+ and Pr3+ have been measured for characteristic excitation conditions. The most efficient luminescence activator in the studied sample was Ce3+. This ion was also a sensitizer of Pr3+, Sm3+, Eu3+, and Dy3+ luminescence. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Using steady-state luminescence measurements, the luminescence spectra of Ce3+, Pr3+, Nd3+, Sm3+, Eu3+, Dy3+, Er3+ and Yb3+ for the agrellite sample from the Kipawa River region have been measured. The emission spectra of Eu3+ and Dy3+ next to those of Sm3+ and Pr3+ have been measured for characteristic excitation conditions. The most efficient luminescence activator in the studied sample was Ce3+. This ion was also a sensitizer of Pr3+, Sm3+, Eu3+, and Dy3+ luminescence. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Czaja, M. B.; Lisiecki, R.; Kądziołka-Gaweł, M.; Winiarski, A.; Krzykawski, T.
The afterglow effect of Mn-bearing natural LiAlSi2O6 spodumene crystals Journal Article
In: Optical Materials, vol. 96, 2019, ISSN: 09253467, (5).
@article{2-s2.0-85070910533,
title = {The afterglow effect of Mn-bearing natural LiAlSi2O6 spodumene crystals},
author = { M.B. Czaja and R. Lisiecki and M. Kądziołka-Gaweł and A. Winiarski and T. Krzykawski},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070910533&doi=10.1016%2fj.optmat.2019.109321&partnerID=40&md5=2b571343cd4a08e0e5137e742457c898},
doi = {10.1016/j.optmat.2019.109321},
issn = {09253467},
year = {2019},
date = {2019-01-01},
journal = {Optical Materials},
volume = {96},
publisher = {Elsevier B.V.},
abstract = {For studied LiAlSi2O6 spodumene crystals, afterglow effect was observed and explained. The luminescence spectra under femtosecond excitation have been presented for this crystal for the first time. The emission bands of point defects in blue, besides those of Mn2+ in orange, have been measured. We demonstrate that emission from defects causes sustaining of emission of Mn2+, and thus, the afterglow phenomenon occurs. The various quantitative ratio of Mn2+ to defects causes the changes in afterglow phenomenon. © 2019 Elsevier B.V.},
note = {5},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For studied LiAlSi2O6 spodumene crystals, afterglow effect was observed and explained. The luminescence spectra under femtosecond excitation have been presented for this crystal for the first time. The emission bands of point defects in blue, besides those of Mn2+ in orange, have been measured. We demonstrate that emission from defects causes sustaining of emission of Mn2+, and thus, the afterglow phenomenon occurs. The various quantitative ratio of Mn2+ to defects causes the changes in afterglow phenomenon. © 2019 Elsevier B.V.
2018
Czaja, M. B.; Lisiecki, R.; Chrobak, A.; Sitko, R.; Mazurak, Z.
The absorption- and luminescence spectra of Mn3+ in beryl and vesuvianite Journal Article
In: Physics and Chemistry of Minerals, vol. 45, no. 5, pp. 475-488, 2018, ISSN: 03421791, (18).
@article{2-s2.0-85037630393,
title = {The absorption- and luminescence spectra of Mn3+ in beryl and vesuvianite},
author = { M.B. Czaja and R. Lisiecki and A. Chrobak and R. Sitko and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037630393&doi=10.1007%2fs00269-017-0934-x&partnerID=40&md5=079db41990d9c2990f420677c82bbf60},
doi = {10.1007/s00269-017-0934-x},
issn = {03421791},
year = {2018},
date = {2018-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {45},
number = {5},
pages = {475-488},
publisher = {Springer Verlag},
abstract = {The electron absorption-, photoluminescence- and electron paramagnetic-resonance spectra of Mn3+ in red beryl from Wah Wah Mountains (Utah USA) and of pink- and purple vesuvianite from Jeffrey Mine (Asbestos; Canada) were measured at room- and low temperatures. The crystal field stabilization energies are equal to 130.9 kJ/mol for the red beryl, and 151.5–158.0 and 168.0 kJ/mol for for the pink- and the purple vesuvianite, respectively. The red photoluminescence of Mn3+ was not intensive either at room- or at low temperatures. The high Mn content in the crystals caused the emergence of an additional emission band and short photoluminescence-decay lifetimes. The latter are only 183 μs for beryl and 17 μs for vesuvianite. © 2017, The Author(s).},
note = {18},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The electron absorption-, photoluminescence- and electron paramagnetic-resonance spectra of Mn3+ in red beryl from Wah Wah Mountains (Utah USA) and of pink- and purple vesuvianite from Jeffrey Mine (Asbestos; Canada) were measured at room- and low temperatures. The crystal field stabilization energies are equal to 130.9 kJ/mol for the red beryl, and 151.5–158.0 and 168.0 kJ/mol for for the pink- and the purple vesuvianite, respectively. The red photoluminescence of Mn3+ was not intensive either at room- or at low temperatures. The high Mn content in the crystals caused the emergence of an additional emission band and short photoluminescence-decay lifetimes. The latter are only 183 μs for beryl and 17 μs for vesuvianite. © 2017, The Author(s).
2017
Czaja, M. B.; Stasiak, M.; Mazurak, Z.
Photoluminescence of Ce3+ and Eu2+ in low-P ternesite from the Negev Desert, Israel Journal Article
In: Physics and Chemistry of Minerals, vol. 44, no. 8, pp. 553-559, 2017, ISSN: 03421791, (3).
@article{2-s2.0-85015198465,
title = {Photoluminescence of Ce3+ and Eu2+ in low-P ternesite from the Negev Desert, Israel},
author = { M.B. Czaja and M. Stasiak and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015198465&doi=10.1007%2fs00269-017-0882-5&partnerID=40&md5=78b68718229a2189c9052c1e6cec1d2b},
doi = {10.1007/s00269-017-0882-5},
issn = {03421791},
year = {2017},
date = {2017-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {44},
number = {8},
pages = {553-559},
publisher = {Springer Verlag},
abstract = {For the first time, the photoluminescence of ions of Ce3+ and Eu2+ in natural low-P ternesite has been measured. The emission bands of Ce3+ ions at 405, 426, and 440 nm and the corresponding excitation wavelengths suggest the presence of Ce3+ ions in three different cationic sites. In the photoluminescence spectra of Eu2+, emission bands at 530 and 620 nm can be seen that originate from two different cationic sites. In addition, it is demonstrated that an energy transfer occurs between Ce3+ and Eu2+ ions situated in those cationic sites where the force of the crystallic field is weakest. The photoluminescence spectra were obtained for a thin section sample with low contents of these two elements (41.2 ppm Ce; 2.11 ppm Eu). © 2017, The Author(s).},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For the first time, the photoluminescence of ions of Ce3+ and Eu2+ in natural low-P ternesite has been measured. The emission bands of Ce3+ ions at 405, 426, and 440 nm and the corresponding excitation wavelengths suggest the presence of Ce3+ ions in three different cationic sites. In the photoluminescence spectra of Eu2+, emission bands at 530 and 620 nm can be seen that originate from two different cationic sites. In addition, it is demonstrated that an energy transfer occurs between Ce3+ and Eu2+ ions situated in those cationic sites where the force of the crystallic field is weakest. The photoluminescence spectra were obtained for a thin section sample with low contents of these two elements (41.2 ppm Ce; 2.11 ppm Eu). © 2017, The Author(s).
Czaja, M. B.; Kądziołka-Gaweł, M.; Konefał, A.; Sitko, R.; Teper, E.; Mazurak, Z.; Sachanbiński, M.
The Mössbauer spectra of prasiolite and amethyst crystals from Poland Journal Article
In: Physics and Chemistry of Minerals, vol. 44, no. 5, pp. 365-375, 2017, ISSN: 03421791, (10).
@article{2-s2.0-85001875381,
title = {The Mössbauer spectra of prasiolite and amethyst crystals from Poland},
author = { M.B. Czaja and M. Kądziołka-Gaweł and A. Konefał and R. Sitko and E. Teper and Z. Mazurak and M. Sachanbiński},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85001875381&doi=10.1007%2fs00269-016-0864-z&partnerID=40&md5=c64d41b9aff81736f304fe8b926941b1},
doi = {10.1007/s00269-016-0864-z},
issn = {03421791},
year = {2017},
date = {2017-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {44},
number = {5},
pages = {365-375},
publisher = {Springer Verlag},
abstract = {Mössbauer spectroscopy of green (prasiolite) and violet (amethyst) quartz crystals from the Sudety Mountains (Poland) has shown that neither Fe2+ nor Fe4+ ions are present in them. Only Fe3+ ions have been identified and only in interstitial positions in channels parallel or perpendicular to the c-axis. The valence of Fe3+ ions did not change as a result of irradiation or annealing. Instead, we believe that the Fe3+ ions move within channels or between them. © 2016, The Author(s).},
note = {10},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mössbauer spectroscopy of green (prasiolite) and violet (amethyst) quartz crystals from the Sudety Mountains (Poland) has shown that neither Fe2+ nor Fe4+ ions are present in them. Only Fe3+ ions have been identified and only in interstitial positions in channels parallel or perpendicular to the c-axis. The valence of Fe3+ ions did not change as a result of irradiation or annealing. Instead, we believe that the Fe3+ ions move within channels or between them. © 2016, The Author(s).
2015
Mazurak, Z.; Wanic, A.; Domański, M.; Jarzabek, B.; Kaczmarczyk, B.; Konefał, A.; Kądziołka-Gaweł, M.; Czaja, M. B.
The effect of gamma irradiation on the fluorescence properties of 1,4,5,8-naphtalisoimides Journal Article
In: Radiation Physics and Chemistry, vol. 110, pp. 67-71, 2015, ISSN: 0969806X.
@article{2-s2.0-84921901534,
title = {The effect of gamma irradiation on the fluorescence properties of 1,4,5,8-naphtalisoimides},
author = { Z. Mazurak and A. Wanic and M. Domański and B. Jarzabek and B. Kaczmarczyk and A. Konefał and M. Kądziołka-Gaweł and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921901534&doi=10.1016%2fj.radphyschem.2015.01.023&partnerID=40&md5=9bdd2be01fabb3948d11b9f072eb5d1f},
doi = {10.1016/j.radphyschem.2015.01.023},
issn = {0969806X},
year = {2015},
date = {2015-01-01},
journal = {Radiation Physics and Chemistry},
volume = {110},
pages = {67-71},
publisher = {Elsevier Ltd},
abstract = {The subject of our investigation was the intensity of the fluorescence of 1,4,5,8-naphtalisoimides subjected to gamma radiation (the absorbed doses were 242. Gy; 1. kGy and 2.242. kGy). Dynamic changes of fluorescence intensity have been observed; the greatest relative increase of fluorescence intensity (and simultaneously; the least durable increase) occurs as a result of structural isomerisation. © 2015 Elsevier Ltd.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The subject of our investigation was the intensity of the fluorescence of 1,4,5,8-naphtalisoimides subjected to gamma radiation (the absorbed doses were 242. Gy; 1. kGy and 2.242. kGy). Dynamic changes of fluorescence intensity have been observed; the greatest relative increase of fluorescence intensity (and simultaneously; the least durable increase) occurs as a result of structural isomerisation. © 2015 Elsevier Ltd.
Mazurak, Z.; Wanic, A.; Karolczak, J.; Czaja, M. B.
The fluorescence decay times and quantum efficiencies of 1,4,5,8-naphthalisoimides Journal Article
In: Journal of Luminescence, vol. 158, pp. 103-109, 2015, ISSN: 00222313, (8).
@article{2-s2.0-84908149097,
title = {The fluorescence decay times and quantum efficiencies of 1,4,5,8-naphthalisoimides},
author = { Z. Mazurak and A. Wanic and J. Karolczak and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908149097&doi=10.1016%2fj.jlumin.2014.09.039&partnerID=40&md5=8f3b21dfcb57d21e1071e60b4ac9e76a},
doi = {10.1016/j.jlumin.2014.09.039},
issn = {00222313},
year = {2015},
date = {2015-01-01},
journal = {Journal of Luminescence},
volume = {158},
pages = {103-109},
publisher = {Elsevier B.V.},
abstract = {Presented herein are the luminescence properties of several 1,4,5,8- polinahthalisoimides. The luminescence decay curves after deconvolution exhibit three decay times: τ1, τ2, and τ3.The luminescence lifetimes change along with the growth of excitation energy, as well as the contribution of each luminescence decay mechanism (A1; A2; and A3). The manner of change is distinct for one sample, namely, the pure E-isomer, in comparison to the others. The radiative deexcitation coupled with radiationless vibrational energy transfer to other luminescence centers, mainly other isomer units, is discussed as a possible deexcitation mechanism of fluorescence. The Kasha-Vavilov empirical rule is not fulfilled for the studied samples, as the luminescence quantum efficiency (ΦF) distinctly depends on the excitation wavelength (λexc). The quantum yield of one sample (about 63% of Z-isomer) is quite high, at 1%. © 2014 Elsevier B.V. All rights reserved.},
note = {8},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Presented herein are the luminescence properties of several 1,4,5,8- polinahthalisoimides. The luminescence decay curves after deconvolution exhibit three decay times: τ1, τ2, and τ3.The luminescence lifetimes change along with the growth of excitation energy, as well as the contribution of each luminescence decay mechanism (A1; A2; and A3). The manner of change is distinct for one sample, namely, the pure E-isomer, in comparison to the others. The radiative deexcitation coupled with radiationless vibrational energy transfer to other luminescence centers, mainly other isomer units, is discussed as a possible deexcitation mechanism of fluorescence. The Kasha-Vavilov empirical rule is not fulfilled for the studied samples, as the luminescence quantum efficiency (ΦF) distinctly depends on the excitation wavelength (λexc). The quantum yield of one sample (about 63% of Z-isomer) is quite high, at 1%. © 2014 Elsevier B.V. All rights reserved.
2014
Burtan, B.; Cisowski, J.; Mazurak, Z.; Jarzabek, B.; Czaja, M. B.; Lisiecki, R.; Ryba-Romanowski, W.; Reben, M.; Grelowska, I.
Erratum: Concentration-dependent spectroscopic properties of Pr3 + ions in TeO2-WO3-PbO-La2O3 glass (J. Non-Cryst. Solids (2014) 400 (21-26)) Journal Article
In: Journal of Non-Crystalline Solids, vol. 404, pp. 182-, 2014, ISSN: 00223093.
@article{2-s2.0-84912544269,
title = {Erratum: Concentration-dependent spectroscopic properties of Pr3 + ions in TeO2-WO3-PbO-La2O3 glass (J. Non-Cryst. Solids (2014) 400 (21-26))},
author = { B. Burtan and J. Cisowski and Z. Mazurak and B. Jarzabek and M.B. Czaja and R. Lisiecki and W. Ryba-Romanowski and M. Reben and I. Grelowska},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912544269&doi=10.1016%2fj.jnoncrysol.2014.10.004&partnerID=40&md5=5513e198b2d15f0f2bcbec73a2f65847},
doi = {10.1016/j.jnoncrysol.2014.10.004},
issn = {00223093},
year = {2014},
date = {2014-01-01},
journal = {Journal of Non-Crystalline Solids},
volume = {404},
pages = {182-},
publisher = {Elsevier B.V.},
abstract = {[No abstract available]},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
[No abstract available]
Burtan, B.; Cisowski, J.; Mazurak, Z.; Jarzabek, B.; Czaja, M. B.; Reben, M.; Grelowska, I.
Concentration-dependent spectroscopic properties of Pr3 + ions in TeO2-WO3-PbO-La2O3 glass Journal Article
In: Journal of Non-Crystalline Solids, vol. 400, pp. 21-26, 2014, ISSN: 00223093, (18).
@article{2-s2.0-84901045116,
title = {Concentration-dependent spectroscopic properties of Pr3 + ions in TeO2-WO3-PbO-La2O3 glass},
author = { B. Burtan and J. Cisowski and Z. Mazurak and B. Jarzabek and M.B. Czaja and M. Reben and I. Grelowska},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901045116&doi=10.1016%2fj.jnoncrysol.2014.04.016&partnerID=40&md5=65a9737d39af00c5c6cf5e68f9a8e151},
doi = {10.1016/j.jnoncrysol.2014.04.016},
issn = {00223093},
year = {2014},
date = {2014-01-01},
journal = {Journal of Non-Crystalline Solids},
volume = {400},
pages = {21-26},
publisher = {Elsevier},
abstract = {The purpose of this work was to investigate the spectroscopic properties of Pr3 + ions of various concentrations embedded in a new matrix, namely a tellurite-tungstate glass with the molar composition 60%TeO 2-27%WO3-10%PbO-3%La2O3 (TWPLa). The optical absorption edge of the TWPLa matrix has been described within the Urbach approach, while the absorption and fluorescence spectra of the Pr 3 +-doped TWPLa glasses have been analyzed in terms of the standard Judd-Ofelt (J-O) theory along with the luminescence decay of the 3P0 and 1D2 levels of the Pr 3 + ion. A significant influence of the Pr3 + ion concentration on the photoluminescence intensity as well as on decrease of the lifetimes of both levels has been explained by a non-radiative energy transfer between the ions through different cross-relaxation channels. The spectroscopic studies have been completed with ellipsometric measurements providing the dispersion relation of the refractive index of the investigated glasses that has been taken into account in the J-O analysis. © 2014 Elsevier B.V.},
note = {18},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The purpose of this work was to investigate the spectroscopic properties of Pr3 + ions of various concentrations embedded in a new matrix, namely a tellurite-tungstate glass with the molar composition 60%TeO 2-27%WO3-10%PbO-3%La2O3 (TWPLa). The optical absorption edge of the TWPLa matrix has been described within the Urbach approach, while the absorption and fluorescence spectra of the Pr 3 +-doped TWPLa glasses have been analyzed in terms of the standard Judd-Ofelt (J-O) theory along with the luminescence decay of the 3P0 and 1D2 levels of the Pr 3 + ion. A significant influence of the Pr3 + ion concentration on the photoluminescence intensity as well as on decrease of the lifetimes of both levels has been explained by a non-radiative energy transfer between the ions through different cross-relaxation channels. The spectroscopic studies have been completed with ellipsometric measurements providing the dispersion relation of the refractive index of the investigated glasses that has been taken into account in the J-O analysis. © 2014 Elsevier B.V.
Czaja, M. B.; Kądziołka-Gaweł, M.; Lisiecki, R.; Bodył-Gajowska, S.; Mazurak, Z.
Luminescence and other spectroscopic properties of purple and green Cr-clinochlore Journal Article
In: Physics and Chemistry of Minerals, vol. 41, no. 2, pp. 115-126, 2014, ISSN: 03421791, (7).
@article{2-s2.0-84893666291,
title = {Luminescence and other spectroscopic properties of purple and green Cr-clinochlore},
author = { M.B. Czaja and M. Kądziołka-Gaweł and R. Lisiecki and S. Bodył-Gajowska and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893666291&doi=10.1007%2fs00269-013-0629-x&partnerID=40&md5=6d7a2a3d5685a20c8e27e23aa1131577},
doi = {10.1007/s00269-013-0629-x},
issn = {03421791},
year = {2014},
date = {2014-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {41},
number = {2},
pages = {115-126},
abstract = {For the first time ever, the luminescence spectra of Cr3+ centers in two chlorite crystals are presented. Chromium ions occupy the strong crystal-field site M4 in the brucite sheet and the intermediate crystal-field site in the inner octahedral sheet for purple and green chlorite, respectively. We discuss the influence of an effective positive charge on the Cr3+ ion and an effective negative charge of ligands on the differences in the values of the Dq and B parameters. It is concluded that the presence of Fe2+ ions and other point defects, as well as concentration quenching, causes the very short luminescence lifetimes of chromium ions. © 2013 The Author(s).},
note = {7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For the first time ever, the luminescence spectra of Cr3+ centers in two chlorite crystals are presented. Chromium ions occupy the strong crystal-field site M4 in the brucite sheet and the intermediate crystal-field site in the inner octahedral sheet for purple and green chlorite, respectively. We discuss the influence of an effective positive charge on the Cr3+ ion and an effective negative charge of ligands on the differences in the values of the Dq and B parameters. It is concluded that the presence of Fe2+ ions and other point defects, as well as concentration quenching, causes the very short luminescence lifetimes of chromium ions. © 2013 The Author(s).
2013
Czaja, M. B.; Bodył-Gajowska, S.; Mazurak, Z.
Steady-state luminescence measurement for qualitative identification of rare earth ions in minerals Journal Article
In: Journal of Mineralogical and Petrological Sciences, vol. 108, no. 2, pp. 47-54, 2013, ISSN: 13456296, (6).
@article{2-s2.0-84880691698,
title = {Steady-state luminescence measurement for qualitative identification of rare earth ions in minerals},
author = { M.B. Czaja and S. Bodył-Gajowska and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880691698&doi=10.2465%2fjmps.111229&partnerID=40&md5=d8def10122338accabc5f1ef6f42da0d},
doi = {10.2465/jmps.111229},
issn = {13456296},
year = {2013},
date = {2013-01-01},
journal = {Journal of Mineralogical and Petrological Sciences},
volume = {108},
number = {2},
pages = {47-54},
abstract = {Minerals are the source of rare earth elements (REE), and knowledge of the amount of REE in different minerals is necessary for a mineralogist. We propose steady-state luminescence measurement as a quick and non-destructive method for detecting several lanthanide ions present together in the same sample. By using excitation and emission spectra of each 4f ion, rare earth ions could be easily identified. The most intense emission lines in the UV-VIS range are 336 nm for Ce3+, 420 nm for Eu2+, 596-649 nm for Pr3+ and Sm3+, 614-617 nm for Eu3+, at 478 and 573-579 nm for Dy3+, and 520-550 nm for Er3+ and Ho3+ ions. We have verified that the best excitation wavelength for each ion as follows: for Ce3+ and Eu2+, 295 nm and 336 nm; for Pr3+, 442 nm; for Sm3+, 399-408 nm; for Eu3+, 393-395 nm; for Dy3+, 348 nm; for Er3+, 377 nm; and for Ho3+, 415 nm.},
note = {6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Minerals are the source of rare earth elements (REE), and knowledge of the amount of REE in different minerals is necessary for a mineralogist. We propose steady-state luminescence measurement as a quick and non-destructive method for detecting several lanthanide ions present together in the same sample. By using excitation and emission spectra of each 4f ion, rare earth ions could be easily identified. The most intense emission lines in the UV-VIS range are 336 nm for Ce3+, 420 nm for Eu2+, 596-649 nm for Pr3+ and Sm3+, 614-617 nm for Eu3+, at 478 and 573-579 nm for Dy3+, and 520-550 nm for Er3+ and Ho3+ ions. We have verified that the best excitation wavelength for each ion as follows: for Ce3+ and Eu2+, 295 nm and 336 nm; for Pr3+, 442 nm; for Sm3+, 399-408 nm; for Eu3+, 393-395 nm; for Dy3+, 348 nm; for Er3+, 377 nm; and for Ho3+, 415 nm.
2012
Czaja, M. B.; Bodył-Gajowska, S.; Lisiecki, R.; Meijerink, A.; Mazurak, Z.
The luminescence properties of rare-earth ions in natural fluorite Journal Article
In: Physics and Chemistry of Minerals, vol. 39, no. 8, pp. 639-648, 2012, ISSN: 03421791, (13).
@article{2-s2.0-84865742561,
title = {The luminescence properties of rare-earth ions in natural fluorite},
author = { M.B. Czaja and S. Bodył-Gajowska and R. Lisiecki and A. Meijerink and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865742561&doi=10.1007%2fs00269-012-0518-8&partnerID=40&md5=f7d823fc2e434569ac6d1950e47795d6},
doi = {10.1007/s00269-012-0518-8},
issn = {03421791},
year = {2012},
date = {2012-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {39},
number = {8},
pages = {639-648},
abstract = {For the first time, the luminescence properties of Pr 3+, Nd 3+ and Tm 3+ and Yb 3+ ions in fluorite crystal have been obtained by steady-state measurements. In addition, the luminescence spectra of Ce 3+, Sm 2+, Sm 3+, Dy 3+, Er 3+ and Yb 3+ were measured. It was pointed out that λ exc. = 415 nm is most suitable for measuring the Ho 3+ emission beside the Er 3+. The emission of trivalent holmium and erbium ions was measured independently using time-resolved measurements and tentative assignment of luminescence lines to C 3v and C 4v symmetry sites was proposed. Besides for natural fluorite crystal, the transitions between Stark energy levels of lanthanide ions were presented. © 2012 The Author(s).},
note = {13},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
For the first time, the luminescence properties of Pr 3+, Nd 3+ and Tm 3+ and Yb 3+ ions in fluorite crystal have been obtained by steady-state measurements. In addition, the luminescence spectra of Ce 3+, Sm 2+, Sm 3+, Dy 3+, Er 3+ and Yb 3+ were measured. It was pointed out that λ exc. = 415 nm is most suitable for measuring the Ho 3+ emission beside the Er 3+. The emission of trivalent holmium and erbium ions was measured independently using time-resolved measurements and tentative assignment of luminescence lines to C 3v and C 4v symmetry sites was proposed. Besides for natural fluorite crystal, the transitions between Stark energy levels of lanthanide ions were presented. © 2012 The Author(s).
Burtan, B.; Mazurak, Z.; Cisowski, J.; Czaja, M. B.; Lisiecki, R.; Ryba-Romanowski, W.; Reben, M.; Wasylak, J.
Optical properties of Nd3+ and Er3+ ions in TeO 2-WO3-PbO-La2O3 glasses Proceedings
Elsevier B.V., vol. 34, no. 12, 2012, ISSN: 09253467, (26).
@proceedings{2-s2.0-84865325073,
title = {Optical properties of Nd3+ and Er3+ ions in TeO 2-WO3-PbO-La2O3 glasses},
author = { B. Burtan and Z. Mazurak and J. Cisowski and M.B. Czaja and R. Lisiecki and W. Ryba-Romanowski and M. Reben and J. Wasylak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84865325073&doi=10.1016%2fj.optmat.2012.03.030&partnerID=40&md5=4965cf9d88a36075a4c9a6a7bd314606},
doi = {10.1016/j.optmat.2012.03.030},
issn = {09253467},
year = {2012},
date = {2012-01-01},
journal = {Optical Materials},
volume = {34},
number = {12},
pages = {2050-2054},
publisher = {Elsevier B.V.},
abstract = {Multicomponent telluride-tungstate glasses containing Nd3+ and Er3+ ions were studied experimentally at 77 and 293 K using spectroscopic methods. The Judd-Ofelt intensity parameters were derived from the absorption spectra and used to calculate the radiative lifetimes and branching ratios. The quantum efficiency η = 0.95 of the 4F3/2 level of Nd3+ ion is higher than the typical value of other tellurite-based glasses. For low concentration of Er3+ ions, the luminescence decay of the 4S3/2 and 4I 11/2 levels is governed by radiative transitions and multiphonon relaxation involving the Te-O highest energy vibrations. © 2012 Elsevier Ltd. All rights reserved.},
note = {26},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Multicomponent telluride-tungstate glasses containing Nd3+ and Er3+ ions were studied experimentally at 77 and 293 K using spectroscopic methods. The Judd-Ofelt intensity parameters were derived from the absorption spectra and used to calculate the radiative lifetimes and branching ratios. The quantum efficiency η = 0.95 of the 4F3/2 level of Nd3+ ion is higher than the typical value of other tellurite-based glasses. For low concentration of Er3+ ions, the luminescence decay of the 4S3/2 and 4I 11/2 levels is governed by radiative transitions and multiphonon relaxation involving the Te-O highest energy vibrations. © 2012 Elsevier Ltd. All rights reserved.
2011
Mazurak, Z.; Burtan, B.; Cisowski, J.; Czaja, M. B.; Lisiecki, R.; Ryba-Romanowski, W.; Reben, M.; Wasylak, J.
Photoluminescent properties of rare-earth ions in TeO2-WO 3-PbO-La2O3 glasses Proceedings
vol. 8306, 2011, ISSN: 0277786X.
@proceedings{2-s2.0-81455147443,
title = {Photoluminescent properties of rare-earth ions in TeO2-WO 3-PbO-La2O3 glasses},
author = { Z. Mazurak and B. Burtan and J. Cisowski and M.B. Czaja and R. Lisiecki and W. Ryba-Romanowski and M. Reben and J. Wasylak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-81455147443&doi=10.1117%2f12.911168&partnerID=40&md5=e5b4c1062e1d3825c47eac0a4e6ec429},
doi = {10.1117/12.911168},
issn = {0277786X},
year = {2011},
date = {2011-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {8306},
abstract = {The tellurite-tungstate glasses containing small amounts of rare-earth ions have been studied experimentally at 77 and 293 K using spectroscopic methods. The photoluminescence (PL) studies reveal the emission of efficient green-yellow light from Tb3+ ions and red light from Eu3+ ions. The Judd-Ofelt intensity parameters have been derived for Nd3+ and Er3+ ions from the absorption spectra and they have used to calculate the radiative lifetimes and branching ratios. The quantum efficiency η = 0.95 of the 4F3/2 level of Nd3+ ion is higher than the typical value of other tellurite-based glasses. For Er3+ ions, PL originating from the 4S3/2,4I 11/2 and 4I13/2 levels has been observed and the luminescence decay of the first two levels has been found to be governed by radiative transitions and multiphonon relaxation involving the highest energy of Te-O vibrations. © 2011 SPIE.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
The tellurite-tungstate glasses containing small amounts of rare-earth ions have been studied experimentally at 77 and 293 K using spectroscopic methods. The photoluminescence (PL) studies reveal the emission of efficient green-yellow light from Tb3+ ions and red light from Eu3+ ions. The Judd-Ofelt intensity parameters have been derived for Nd3+ and Er3+ ions from the absorption spectra and they have used to calculate the radiative lifetimes and branching ratios. The quantum efficiency η = 0.95 of the 4F3/2 level of Nd3+ ion is higher than the typical value of other tellurite-based glasses. For Er3+ ions, PL originating from the 4S3/2,4I 11/2 and 4I13/2 levels has been observed and the luminescence decay of the first two levels has been found to be governed by radiative transitions and multiphonon relaxation involving the highest energy of Te-O vibrations. © 2011 SPIE.
Mazurak, Z.; Czaja, M. B.; Lisiecki, R.; Gabryś-Pisarska, J.
Optical properties of the Tm3+ and energy transfer between Tm3+→Pr3+ ions in P2O5-CaO-SrO- BaO phosphate glass Journal Article
In: Optical Materials, vol. 33, no. 3, pp. 506-510, 2011, ISSN: 09253467, (15).
@article{2-s2.0-78650536927,
title = {Optical properties of the Tm3+ and energy transfer between Tm3+→Pr3+ ions in P2O5-CaO-SrO- BaO phosphate glass},
author = { Z. Mazurak and M.B. Czaja and R. Lisiecki and J. Gabryś-Pisarska},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-78650536927&doi=10.1016%2fj.optmat.2010.10.031&partnerID=40&md5=bf2ab34fccad355969025ec5e774c244},
doi = {10.1016/j.optmat.2010.10.031},
issn = {09253467},
year = {2011},
date = {2011-01-01},
journal = {Optical Materials},
volume = {33},
number = {3},
pages = {506-510},
publisher = {Elsevier B.V.},
abstract = {A P2O5-CaO-SrO-BaO phosphate glass doped with Tm 3+ and glasses doped with (Tm3+; Pr3+) were used for this study. The photo-luminescence behaviors of Tm3+ and Pr3+ in phosphate glass were investigated by absorption, excitation and emission spectroscopy. The energy transfer between Tm3+ and Pr3+ in phosphate glasses (which exhibit a variety of transfer efficiencies) was studied. The experimental quantum efficiencies of the luminescence of Tm3+ η0 and (Tm 3+; Pr3+) doped phosphate glasses were measured to give η/η0 = 0.447, 0.305, and 0.179 for (0.4 mol% Pr3+; 1.0 mol% Tm3+), (0.8%Pr3+; 1.0%Tm3+) and (1.6 mol% Pr3+; 1.0 mol% Tm3+), respectively. In order to verify the nature of the ion coupling in our phosphate glass system, we applied the Inokuti-Hirayama model. The non-radiative energy transfer rate from Tm 3+ to Pr3+, transfer efficiencies, and the donor-acceptor distance have been calculated and compared with obtained experimental data. As usual, the efficiency and the probability of energy transfer increase with the concentration of the acceptor. © 2010 Elsevier B.V. All rights reserved.},
note = {15},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A P2O5-CaO-SrO-BaO phosphate glass doped with Tm 3+ and glasses doped with (Tm3+; Pr3+) were used for this study. The photo-luminescence behaviors of Tm3+ and Pr3+ in phosphate glass were investigated by absorption, excitation and emission spectroscopy. The energy transfer between Tm3+ and Pr3+ in phosphate glasses (which exhibit a variety of transfer efficiencies) was studied. The experimental quantum efficiencies of the luminescence of Tm3+ η0 and (Tm 3+; Pr3+) doped phosphate glasses were measured to give η/η0 = 0.447, 0.305, and 0.179 for (0.4 mol% Pr3+; 1.0 mol% Tm3+), (0.8%Pr3+; 1.0%Tm3+) and (1.6 mol% Pr3+; 1.0 mol% Tm3+), respectively. In order to verify the nature of the ion coupling in our phosphate glass system, we applied the Inokuti-Hirayama model. The non-radiative energy transfer rate from Tm 3+ to Pr3+, transfer efficiencies, and the donor-acceptor distance have been calculated and compared with obtained experimental data. As usual, the efficiency and the probability of energy transfer increase with the concentration of the acceptor. © 2010 Elsevier B.V. All rights reserved.
2010
Sochanik, A.; Mitrus, I.; Smolarczyk, R.; Cichoń, T.; Śnietura, M.; Czaja, M. B.; Szala, S.
Experimental anticancer therapy with vascular-disruptive peptide and liposome-entrapped chemotherapeutic agent Journal Article
In: Archivum Immunologiae et Therapiae Experimentalis, vol. 58, no. 3, pp. 235-245, 2010, ISSN: 0004069X, (4).
@article{2-s2.0-77953020592,
title = {Experimental anticancer therapy with vascular-disruptive peptide and liposome-entrapped chemotherapeutic agent},
author = { A. Sochanik and I. Mitrus and R. Smolarczyk and T. Cichoń and M. Śnietura and M.B. Czaja and S. Szala},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953020592&doi=10.1007%2fs00005-010-0077-y&partnerID=40&md5=71c140b4436210a00836cae781e986e1},
doi = {10.1007/s00005-010-0077-y},
issn = {0004069X},
year = {2010},
date = {2010-01-01},
journal = {Archivum Immunologiae et Therapiae Experimentalis},
volume = {58},
number = {3},
pages = {235-245},
abstract = {Vasculature is essential for the sustained growth of solid tumors and metastases. Tumor cells surviving vascular- disruptive therapeutic intervention (especially those present at the tumor rim) can contribute to tumor regrowth. The aim was to strengthen, by carrier-mediated delivery of a chemotherapeutic, the curative effects of a bifunctional antivascular oligopeptide capable of inducing vascular shutdown and tumor shrinkage. For the in vitro experiments and animal therapy, ACDCRGDCFC-GG-D(KLAKLAK)2 peptide (900 μM in D-PBSA; i.e. Dulbecco's PBS without Ca2+ and Mg 2+) and size-calibrated, passively or actively targeted liposomes based on distearoylphosphatidylcholine, cholesterol, and N-carbamoyl- methoxypolyethyleneglycol coupled to distearoylphosphatidylethanolamine (PEG- DSPE) and containing gradient-entrapped doxorubicin were used. The KB (human nasopharyngeal carcinoma) cell line overexpressing folate receptors was used in the fluorescence studies of liposomal uptake. The B16-F10 melanoma cell line was used for confirming, by flow cytometry and confocal microscopy, doxorubicin intracellular transfer as well as to induce experimental tumors in C57BL/6 mice. Animal therapy was achieved with injections of vasculardisrupting peptide, doxorubicin-loaded liposomes, or alternating combined therapy. The results (tumor growth inhibition and survival) were compared using the Mann- Whitney U test and the log-rank test. Necrosis in H&Estained tumor sections was assessed microscopically by pathologists. Treatment of C57BL/6 mice bearing B16-F10 experimental tumors with a combination of vasculardisruptive peptide and doxorubicin-carrying pegylated liposomes (either passively targeted liposomes (PTL) or folate receptor targeted) gave better therapeutic effects when tumor development was re-challenged with a second cycle of combined therapy. Marked inhibition of tumor growth and a statistically significant extension of the lifespan of the treated mice were observed when the re-challenge involved the use of folate receptor-targeted liposomes (FTL). Anticancer therapy involving vascular-disruptive peptide and doxorubicin delivered via pegylated folate receptor-targeted liposomes is more effective than either monotherapy, especially when tumor growth is re-challenged with the therapeutic combination. © L. Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Poland 2010.},
note = {4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Vasculature is essential for the sustained growth of solid tumors and metastases. Tumor cells surviving vascular- disruptive therapeutic intervention (especially those present at the tumor rim) can contribute to tumor regrowth. The aim was to strengthen, by carrier-mediated delivery of a chemotherapeutic, the curative effects of a bifunctional antivascular oligopeptide capable of inducing vascular shutdown and tumor shrinkage. For the in vitro experiments and animal therapy, ACDCRGDCFC-GG-D(KLAKLAK)2 peptide (900 μM in D-PBSA; i.e. Dulbecco's PBS without Ca2+ and Mg 2+) and size-calibrated, passively or actively targeted liposomes based on distearoylphosphatidylcholine, cholesterol, and N-carbamoyl- methoxypolyethyleneglycol coupled to distearoylphosphatidylethanolamine (PEG- DSPE) and containing gradient-entrapped doxorubicin were used. The KB (human nasopharyngeal carcinoma) cell line overexpressing folate receptors was used in the fluorescence studies of liposomal uptake. The B16-F10 melanoma cell line was used for confirming, by flow cytometry and confocal microscopy, doxorubicin intracellular transfer as well as to induce experimental tumors in C57BL/6 mice. Animal therapy was achieved with injections of vasculardisrupting peptide, doxorubicin-loaded liposomes, or alternating combined therapy. The results (tumor growth inhibition and survival) were compared using the Mann- Whitney U test and the log-rank test. Necrosis in H&Estained tumor sections was assessed microscopically by pathologists. Treatment of C57BL/6 mice bearing B16-F10 experimental tumors with a combination of vasculardisruptive peptide and doxorubicin-carrying pegylated liposomes (either passively targeted liposomes (PTL) or folate receptor targeted) gave better therapeutic effects when tumor development was re-challenged with a second cycle of combined therapy. Marked inhibition of tumor growth and a statistically significant extension of the lifespan of the treated mice were observed when the re-challenge involved the use of folate receptor-targeted liposomes (FTL). Anticancer therapy involving vascular-disruptive peptide and doxorubicin delivered via pegylated folate receptor-targeted liposomes is more effective than either monotherapy, especially when tumor growth is re-challenged with the therapeutic combination. © L. Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Poland 2010.
Czaja, M. B.; Bodył, S.; Lisiecki, R.; Mazurak, Z.
Luminescence properties of Pr3+ and Sm3+ ions in natural apatites Journal Article
In: Physics and Chemistry of Minerals, vol. 37, no. 7, pp. 425-433, 2010, ISSN: 03421791, (10).
@article{2-s2.0-77954216619,
title = {Luminescence properties of Pr3+ and Sm3+ ions in natural apatites},
author = { M.B. Czaja and S. Bodył and R. Lisiecki and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954216619&doi=10.1007%2fs00269-009-0344-9&partnerID=40&md5=61389dc225233f6b4e33b0c4a6b06834},
doi = {10.1007/s00269-009-0344-9},
issn = {03421791},
year = {2010},
date = {2010-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {37},
number = {7},
pages = {425-433},
abstract = {The luminescence spectra of Pr3+ and Sm3+ ions in apatite Ca5[F{pipe}(PO4)3] crystals from Spain and Russia have been compared with those for phosphate glasses doped with Pr3+, Sm3+ and Pr3+, Sm3+ ions. Time-resolved spectra measurements confirm that, in apatites, samarium ions occupy two non-equivalent crystal sites; the same is assumed for praseodymium ions. For the first time in minerals, the Stark splitting energy levels ΔE for 3H6 and 1D2 of Pr3+ ion and 6H7/2 of Sm3+ ion were determined. Some small differences in ΔE values for the Spanish and Russian apatite are discussed. The decay times of the excited levels of Pr3+, Sm3+ and Pr3+, Sm3+ doped in phosphate glass were measured at room temperature and at 77 K. The energy transfer process between samarium and praseodymium ions was observed and the energy transfer rate was calculated. © 2009 Springer-Verlag.},
note = {10},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The luminescence spectra of Pr3+ and Sm3+ ions in apatite Ca5[F{pipe}(PO4)3] crystals from Spain and Russia have been compared with those for phosphate glasses doped with Pr3+, Sm3+ and Pr3+, Sm3+ ions. Time-resolved spectra measurements confirm that, in apatites, samarium ions occupy two non-equivalent crystal sites; the same is assumed for praseodymium ions. For the first time in minerals, the Stark splitting energy levels ΔE for 3H6 and 1D2 of Pr3+ ion and 6H7/2 of Sm3+ ion were determined. Some small differences in ΔE values for the Spanish and Russian apatite are discussed. The decay times of the excited levels of Pr3+, Sm3+ and Pr3+, Sm3+ doped in phosphate glass were measured at room temperature and at 77 K. The energy transfer process between samarium and praseodymium ions was observed and the energy transfer rate was calculated. © 2009 Springer-Verlag.
Mazurak, Z.; Bodył, S.; Lisiecki, R.; Gabryś-Pisarska, J.; Czaja, M. B.
Optical properties of Pr3+, Sm3+ and Er3+ doped P2O5-CaO-SrO-BaO phosphate glass Journal Article
In: Optical Materials, vol. 32, no. 4, pp. 547-553, 2010, ISSN: 09253467, (120).
@article{2-s2.0-73449110466,
title = {Optical properties of Pr3+, Sm3+ and Er3+ doped P2O5-CaO-SrO-BaO phosphate glass},
author = { Z. Mazurak and S. Bodył and R. Lisiecki and J. Gabryś-Pisarska and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-73449110466&doi=10.1016%2fj.optmat.2009.11.011&partnerID=40&md5=8574e88725a02e27fd56a0b62a1b9b8d},
doi = {10.1016/j.optmat.2009.11.011},
issn = {09253467},
year = {2010},
date = {2010-01-01},
journal = {Optical Materials},
volume = {32},
number = {4},
pages = {547-553},
publisher = {Elsevier B.V.},
abstract = {In this paper, we present the photoluminescence properties of Pr3+, Sm3+ and Er3+ doped phosphate glasses. Optical absorption and emission spectra of lanthanide active ions in P2O5-CaO-SrO-BaO glass have been investigated at room temperature. These glasses have shown strong absorption bands in the near-infrared (NIR) and visible (VIS) region. For Pr3+ doped glass, emission bands centered at 608 nm (3P0 →3H6 +1D2 -3H4), 640 nm (3P0 →3F2), 686 nm (3P0-3F3) and 723 nm (3P0 →3F4) have been observed with 480 nm (3H4 →3P0) excitation wavelength. Of them, 686 nm has shown bright red emission. Emission bands of (4G5/2 →6H5/2) 560 nm, (4G5/2 →6H7/2) 600 nm and (4G5/2 →6H9/2) 645 nm for the Sm3+ phosphate glass, with excitation at (6H5/2 →4F7/2) 400 nm have been recorded. With regard to the Er3+ phosphate glass, a bright fluorescent green-yellow emission at 546 nm (4S3/2 →4I15/2) have been observed. Analysis of decay curves of luminescence revealed occurrence of the strong luminescence quenching originating from the 3P0 metastable level of Pr3+ and 4S3/2 state of Er3+ mainly by a multiphonon relaxation processes to 1D2, 4F9/2 levels respectively. Moreover these results are compared with those obtained by using the Judd-Ofelt theory. According to the Judd-Ofelt theory, the Judd-Ofelt intensity parameters Ω2,4,6 were calculated, by which the radiative transition probabilities and radiative lifetimes of luminescent levels were obtained. © 2009 Elsevier B.V. All rights reserved.},
note = {120},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In this paper, we present the photoluminescence properties of Pr3+, Sm3+ and Er3+ doped phosphate glasses. Optical absorption and emission spectra of lanthanide active ions in P2O5-CaO-SrO-BaO glass have been investigated at room temperature. These glasses have shown strong absorption bands in the near-infrared (NIR) and visible (VIS) region. For Pr3+ doped glass, emission bands centered at 608 nm (3P0 →3H6 +1D2 -3H4), 640 nm (3P0 →3F2), 686 nm (3P0-3F3) and 723 nm (3P0 →3F4) have been observed with 480 nm (3H4 →3P0) excitation wavelength. Of them, 686 nm has shown bright red emission. Emission bands of (4G5/2 →6H5/2) 560 nm, (4G5/2 →6H7/2) 600 nm and (4G5/2 →6H9/2) 645 nm for the Sm3+ phosphate glass, with excitation at (6H5/2 →4F7/2) 400 nm have been recorded. With regard to the Er3+ phosphate glass, a bright fluorescent green-yellow emission at 546 nm (4S3/2 →4I15/2) have been observed. Analysis of decay curves of luminescence revealed occurrence of the strong luminescence quenching originating from the 3P0 metastable level of Pr3+ and 4S3/2 state of Er3+ mainly by a multiphonon relaxation processes to 1D2, 4F9/2 levels respectively. Moreover these results are compared with those obtained by using the Judd-Ofelt theory. According to the Judd-Ofelt theory, the Judd-Ofelt intensity parameters Ω2,4,6 were calculated, by which the radiative transition probabilities and radiative lifetimes of luminescent levels were obtained. © 2009 Elsevier B.V. All rights reserved.
2009
Bodył, S.; Czaja, M. B.; Mazurak, Z.
Optical properties of Pr3+, Sm3+ and Er3+ ions in apatite, fluorite and phosphate glasses Proceedings
Elsevier B.V., vol. 2, no. 2, 2009, ISSN: 18753884, (12).
@proceedings{2-s2.0-77949362508,
title = {Optical properties of Pr3+, Sm3+ and Er3+ ions in apatite, fluorite and phosphate glasses},
author = { S. Bodył and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77949362508&doi=10.1016%2fj.phpro.2009.07.037&partnerID=40&md5=34ce2783bdcdc7dc7406a304a16c8c16},
doi = {10.1016/j.phpro.2009.07.037},
issn = {18753884},
year = {2009},
date = {2009-01-01},
journal = {Physics Procedia},
volume = {2},
number = {2},
pages = {515-525},
publisher = {Elsevier B.V.},
abstract = {The luminescence spectra of naturally occurring apatite Ca 5[F|(PO4)3] and fluorite CaF2 crystals, containing traces of rare-earth elements have been compared with phosphate glasses doped with Pr3+, Sm3+ and Er 3+ ions. The selected excitation bands for luminescence of samarium and praseodymium ions were indicated. Separate emission of Sm3+ ions besides Pr3+ ions in apatite could be measured for λexc=335, 359 and 372 nm and emission of Pr3+ ions was strengthened for λexc.=444 nm. The Judd-Ofelt parameters and branching ratios for Pr3+ and Sm3+ doped phosphate glasses were determined. The spectroscopic quality factor X=Ω4/ Ω6 was found to be 0,69 and 1,75 for Pr3+ and Sm3+ glasses, respectively.},
note = {12},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
The luminescence spectra of naturally occurring apatite Ca 5[F|(PO4)3] and fluorite CaF2 crystals, containing traces of rare-earth elements have been compared with phosphate glasses doped with Pr3+, Sm3+ and Er 3+ ions. The selected excitation bands for luminescence of samarium and praseodymium ions were indicated. Separate emission of Sm3+ ions besides Pr3+ ions in apatite could be measured for λexc=335, 359 and 372 nm and emission of Pr3+ ions was strengthened for λexc.=444 nm. The Judd-Ofelt parameters and branching ratios for Pr3+ and Sm3+ doped phosphate glasses were determined. The spectroscopic quality factor X=Ω4/ Ω6 was found to be 0,69 and 1,75 for Pr3+ and Sm3+ glasses, respectively.
Czaja, M. B.; Bodył, S.; Gabryś-Pisarska, J.; Mazurak, Z.
Applications of Judd-Ofelt theory to praseodymium and samarium ions in phosphate glass Journal Article
In: Optical Materials, vol. 31, no. 12, pp. 1898-1901, 2009, ISSN: 09253467, (35).
@article{2-s2.0-70349138478,
title = {Applications of Judd-Ofelt theory to praseodymium and samarium ions in phosphate glass},
author = { M.B. Czaja and S. Bodył and J. Gabryś-Pisarska and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349138478&doi=10.1016%2fj.optmat.2008.12.018&partnerID=40&md5=f4cc87a066fa9abb91995d0a04fe21c3},
doi = {10.1016/j.optmat.2008.12.018},
issn = {09253467},
year = {2009},
date = {2009-01-01},
journal = {Optical Materials},
volume = {31},
number = {12},
pages = {1898-1901},
publisher = {Elsevier},
abstract = {The Judd-Ofelt (J-O) theory has had a remarkable success in the characterization of radiative transitions in lanthanide doped solids. The purpose of this paper is to review the applications of the J-O theory to the Pr3+ and Sm3+ ions and to use this system as an occasion to appraise its validity and to clarify its limits. In this paper we dwell at length on the absorption and luminescence measurements of two glass samples doped with Pr3+ and Sm3+, because they are basic for the J-O treatment. The results obtained for the J-O theory application to phosphate glasses doped with Pr3+ and Sm3+ present two undesirable outcomes: (1) a positive value of parameter Ω2 and (2) large uncertainties with which the three Judd-Ofelt parameters were obtained. The validity of the J-O theory for intensity analysis was also tested for Sm3+ doped in phosphate glass. The resulting Ω2 was much lower than Ω4. The first set parameters were obtained using all the levels for which fexp. was available. The second set parameter values were evaluated without the 6F1/2 and 6H15/2 levels. The Ω2,4,6 values given in these two sets clearly suggest that particular care should be taken while evaluating the Judd-Ofelt parameters as well as when these parameters are compared to other systems due to their strong dependence on the nature of levels. © 2009 Elsevier B.V. All rights reserved.},
note = {35},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The Judd-Ofelt (J-O) theory has had a remarkable success in the characterization of radiative transitions in lanthanide doped solids. The purpose of this paper is to review the applications of the J-O theory to the Pr3+ and Sm3+ ions and to use this system as an occasion to appraise its validity and to clarify its limits. In this paper we dwell at length on the absorption and luminescence measurements of two glass samples doped with Pr3+ and Sm3+, because they are basic for the J-O treatment. The results obtained for the J-O theory application to phosphate glasses doped with Pr3+ and Sm3+ present two undesirable outcomes: (1) a positive value of parameter Ω2 and (2) large uncertainties with which the three Judd-Ofelt parameters were obtained. The validity of the J-O theory for intensity analysis was also tested for Sm3+ doped in phosphate glass. The resulting Ω2 was much lower than Ω4. The first set parameters were obtained using all the levels for which fexp. was available. The second set parameter values were evaluated without the 6F1/2 and 6H15/2 levels. The Ω2,4,6 values given in these two sets clearly suggest that particular care should be taken while evaluating the Judd-Ofelt parameters as well as when these parameters are compared to other systems due to their strong dependence on the nature of levels. © 2009 Elsevier B.V. All rights reserved.
2008
Pisarski, W. A.; Swinarew, A. S.; Czaja, M. B.; Piekarnik, B.; Grobelny, Z.; Getautis, V.; Gražulevičius, J. V.; Niedziela, T.; Trzebicka, B.; Stolarzewicz, A.
Optically induced carbazolyl containing polyethers: Concentration effects Journal Article
In: Journal of Molecular Structure, vol. 887, no. 1-3, pp. 205-208, 2008, ISSN: 00222860, (9).
@article{2-s2.0-51249095598,
title = {Optically induced carbazolyl containing polyethers: Concentration effects},
author = { W.A. Pisarski and A.S. Swinarew and M.B. Czaja and B. Piekarnik and Z. Grobelny and V. Getautis and J.V. Gražulevičius and T. Niedziela and B. Trzebicka and A. Stolarzewicz},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-51249095598&doi=10.1016%2fj.molstruc.2008.02.042&partnerID=40&md5=45759a7b40219825fcb7c6d14f7fd7f6},
doi = {10.1016/j.molstruc.2008.02.042},
issn = {00222860},
year = {2008},
date = {2008-01-01},
journal = {Journal of Molecular Structure},
volume = {887},
number = {1-3},
pages = {205-208},
abstract = {This paper describes the structure and luminescence properties of carbazolyl containing polyethers obtained from two oxirane monomers, i.e. N-[3-(9H-carbazol-9-yl)-2-(oxiran-2-ylmethoxy)propyl]-N-phenylaniline and 9-(oxiran-2-ylmethyl)-9H-carbazole, in the presence of cyclic oligo(potassium glycidoxide) as a macroinitiator. The investigated systems show a deep blue photoluminescence and its intensity depends on polymer concentration in tetrahydrofuran used as the solvent. © 2008 Elsevier B.V. All rights reserved.},
note = {9},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper describes the structure and luminescence properties of carbazolyl containing polyethers obtained from two oxirane monomers, i.e. N-[3-(9H-carbazol-9-yl)-2-(oxiran-2-ylmethoxy)propyl]-N-phenylaniline and 9-(oxiran-2-ylmethyl)-9H-carbazole, in the presence of cyclic oligo(potassium glycidoxide) as a macroinitiator. The investigated systems show a deep blue photoluminescence and its intensity depends on polymer concentration in tetrahydrofuran used as the solvent. © 2008 Elsevier B.V. All rights reserved.
Czaja, M. B.; Bodył, S.; Głuchowski, P.; Mazurak, Z.; Stręk, W.
Luminescence properties of rare earth ions in fluorite, apatite and scheelite minerals Journal Article
In: Journal of Alloys and Compounds, vol. 451, no. 1-2, pp. 290-292, 2008, ISSN: 09258388, (21).
@article{2-s2.0-38349126237,
title = {Luminescence properties of rare earth ions in fluorite, apatite and scheelite minerals},
author = { M.B. Czaja and S. Bodył and P. Głuchowski and Z. Mazurak and W. Stręk},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-38349126237&doi=10.1016%2fj.jallcom.2007.04.058&partnerID=40&md5=a98ca9729787b92a699f47be849769e4},
doi = {10.1016/j.jallcom.2007.04.058},
issn = {09258388},
year = {2008},
date = {2008-01-01},
journal = {Journal of Alloys and Compounds},
volume = {451},
number = {1-2},
pages = {290-292},
abstract = {The steady-state luminescence spectroscopy was used for identification of RE ions in fluorite CaF2, apatite Ca5[(PO4)3|F] and scheelite CaWO4 minerals. By using selective excitation the luminescence spectra were ascribed to Er3+, Ho3+, Dy3+ and Sm3+ ions in fluorites and Sm3+, Pr3+ and Eu3+ in apatites besides the presence of Ce3+ and Eu2+ ions. For the scheelite the luminescence was ascribed to the Eu3+, Er3+, Dy3+, Sm3+ and Pr3+ ions besides the luminescence of intrinsic [WO4]2- group. © 2007 Elsevier B.V. All rights reserved.},
note = {21},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The steady-state luminescence spectroscopy was used for identification of RE ions in fluorite CaF2, apatite Ca5[(PO4)3|F] and scheelite CaWO4 minerals. By using selective excitation the luminescence spectra were ascribed to Er3+, Ho3+, Dy3+ and Sm3+ ions in fluorites and Sm3+, Pr3+ and Eu3+ in apatites besides the presence of Ce3+ and Eu2+ ions. For the scheelite the luminescence was ascribed to the Eu3+, Er3+, Dy3+, Sm3+ and Pr3+ ions besides the luminescence of intrinsic [WO4]2- group. © 2007 Elsevier B.V. All rights reserved.
Grabiec, E.; Schab-Balcerzak, E.; Czaja, M. B.; Bodył, S.; Grobelny, L.; Kurcok, M.
In: Polimery/Polymers, vol. 53, no. 6, pp. 427-432, 2008, ISSN: 00322725, (1).
@article{2-s2.0-45849151354,
title = {New aromatic polyamideimides - syntheses and thermal and photoluminescent properties [Nowe aromatyczne poliamidoimidy - synteza oraz właś ciwości termiczne i fotoluminescencyjne]},
author = { E. Grabiec and E. Schab-Balcerzak and M.B. Czaja and S. Bodył and L. Grobelny and M. Kurcok},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-45849151354&doi=10.14314%2fpolimery.2008.427&partnerID=40&md5=7d543009f8cfd338c4838fc7075fae98},
doi = {10.14314/polimery.2008.427},
issn = {00322725},
year = {2008},
date = {2008-01-01},
journal = {Polimery/Polymers},
volume = {53},
number = {6},
pages = {427-432},
publisher = {Industrial Chemistry Research Institute},
abstract = {New aromatic polyamideimides (PAD were synthesized by high temperature polycon-densation from diamidedianhydrides (formerly prepared by us) and diamines: 1;5-diaminonaphtha-lene; 4;4'-(hexafluoro-isopropylidene)-dianiline or 2;6-diamineanthraquinone. Chemical structures of PAI obtained (Fig. 1) were confirmed by FTIR (Fig. 2) and NMR (Fig. 3) methods and by elemental analysis. Polyamideimides studied showed high thermal stability both in nitrogen or air atmosphere as well as high glass transition temperature in the range 220-265 °C (Table 1). An evaluation of optical and photoluminescent properties of PAI in NMP solutions (Fig. 4 and 5) showed that they emit the light of wavelength in the range 405-572 nm; dependency on the structure.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
New aromatic polyamideimides (PAD were synthesized by high temperature polycon-densation from diamidedianhydrides (formerly prepared by us) and diamines: 1;5-diaminonaphtha-lene; 4;4'-(hexafluoro-isopropylidene)-dianiline or 2;6-diamineanthraquinone. Chemical structures of PAI obtained (Fig. 1) were confirmed by FTIR (Fig. 2) and NMR (Fig. 3) methods and by elemental analysis. Polyamideimides studied showed high thermal stability both in nitrogen or air atmosphere as well as high glass transition temperature in the range 220-265 °C (Table 1). An evaluation of optical and photoluminescent properties of PAI in NMP solutions (Fig. 4 and 5) showed that they emit the light of wavelength in the range 405-572 nm; dependency on the structure.
2006
Lisińska-Czekaj, A.; Czaja, M. B.; Kozielski, L.; Czekaj, D.; Piechowiak, M.; Nowakowski, M.; Zawiślok, K.
Photoluminescence of nanocrystalline bismuth titanate thin films synthesized by the sol-gel method Proceedings
Trans Tech Publications Ltd, vol. 514-516, no. PART 1, 2006, ISSN: 02555476, (2).
@proceedings{2-s2.0-38049062236,
title = {Photoluminescence of nanocrystalline bismuth titanate thin films synthesized by the sol-gel method},
author = { A. Lisińska-Czekaj and M.B. Czaja and L. Kozielski and D. Czekaj and M. Piechowiak and M. Nowakowski and K. Zawiślok},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-38049062236&doi=10.4028%2fwww.scientific.net%2fmsf.514-516.128&partnerID=40&md5=bc127234bc12894de66146221596bc4f},
doi = {10.4028/www.scientific.net/msf.514-516.128},
issn = {02555476},
year = {2006},
date = {2006-01-01},
journal = {Materials Science Forum},
volume = {514-516},
number = {PART 1},
pages = {128-132},
publisher = {Trans Tech Publications Ltd},
abstract = {The present study is devoted to synthesis and investigation of photoluminescence in the nanosized Bi4Ti3O12 (BTO) thin films. The randomly oriented BTO thin films have been obtained by a modified hybrid sol-gel process. Bismuth nitrate and titanium (IV) butoxide were used as the starting materials. The thin films were deposited on silicon, glass and stainless steel by spin coating and crystallized by the conventional thermal annealing at temperature T=650°C. Formation of the layer perovskite-type structure of the orthorhombic symmetry was confirmed by X-ray diffraction method. Conservation of the chemical composition was investigated by energy dispersive spectroscopy. The UV luminescence has been observed in BTO thin films at room temperature. Results on luminescence excitation and emission in bismuth titanate thin films are given in the present paper.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
The present study is devoted to synthesis and investigation of photoluminescence in the nanosized Bi4Ti3O12 (BTO) thin films. The randomly oriented BTO thin films have been obtained by a modified hybrid sol-gel process. Bismuth nitrate and titanium (IV) butoxide were used as the starting materials. The thin films were deposited on silicon, glass and stainless steel by spin coating and crystallized by the conventional thermal annealing at temperature T=650°C. Formation of the layer perovskite-type structure of the orthorhombic symmetry was confirmed by X-ray diffraction method. Conservation of the chemical composition was investigated by energy dispersive spectroscopy. The UV luminescence has been observed in BTO thin films at room temperature. Results on luminescence excitation and emission in bismuth titanate thin films are given in the present paper.
2005
Sitko, R.; Zawisza, B.; Czaja, M. B.
Fundamental parameters method for determination of rare earth elements in apatites by wavelength-dispersive X-ray fluorescence spectrometry Journal Article
In: Journal of Analytical Atomic Spectrometry, vol. 20, no. 8, pp. 741-745, 2005, ISSN: 02679477, (22).
@article{2-s2.0-23644443651,
title = {Fundamental parameters method for determination of rare earth elements in apatites by wavelength-dispersive X-ray fluorescence spectrometry},
author = { R. Sitko and B. Zawisza and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-23644443651&doi=10.1039%2fb502994e&partnerID=40&md5=8bb03e0118fbba8b35f6c8920e0b876b},
doi = {10.1039/b502994e},
issn = {02679477},
year = {2005},
date = {2005-01-01},
journal = {Journal of Analytical Atomic Spectrometry},
volume = {20},
number = {8},
pages = {741-745},
abstract = {The determination of rare earth elements (REE) in small samples of various apatites (hydroxylapatites; carbonate-hydroxyl-fluorapatites; fluor-carbonate-hydroxylapatites; fluorapatites; fluor-meta-apatites) by wavelength-dispersive X-ray fluorescence spectrometry (WDXRF) is presented. A small amount of the analyzed material is digested in aqua regia and then the solution obtained is pipetted onto a membrane filter. Absorption effects of the matrix elements, e.g. Ca, P, and the membrane filter are determined using an emission-transmission method. Analysis is performed using a lanthanum standard sample and theoretical calculation of the radiation intensity of REE. Therefore, standard samples for each REE are not required. Overlap of the REE peaks is also corrected theoretically using the spectrometer resolution and an approximation of the peak shape by a Gaussian function. © The Royal Society of Chemistry 2005.},
note = {22},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The determination of rare earth elements (REE) in small samples of various apatites (hydroxylapatites; carbonate-hydroxyl-fluorapatites; fluor-carbonate-hydroxylapatites; fluorapatites; fluor-meta-apatites) by wavelength-dispersive X-ray fluorescence spectrometry (WDXRF) is presented. A small amount of the analyzed material is digested in aqua regia and then the solution obtained is pipetted onto a membrane filter. Absorption effects of the matrix elements, e.g. Ca, P, and the membrane filter are determined using an emission-transmission method. Analysis is performed using a lanthanum standard sample and theoretical calculation of the radiation intensity of REE. Therefore, standard samples for each REE are not required. Overlap of the REE peaks is also corrected theoretically using the spectrometer resolution and an approximation of the peak shape by a Gaussian function. © The Royal Society of Chemistry 2005.
2004
Bartkowska, J. A.; Cisowski, J.; Voiron, J.; Heimann, J.; Czaja, M. B.; Mazurak, Z.
Magnetization and magnetic susceptibility of jadeite Journal Article
In: European Journal of Mineralogy, vol. 16, no. 4, pp. 671-675, 2004, ISSN: 09351221.
@article{2-s2.0-3242879305,
title = {Magnetization and magnetic susceptibility of jadeite},
author = { J.A. Bartkowska and J. Cisowski and J. Voiron and J. Heimann and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-3242879305&doi=10.1127%2f0935-1221%2f2004%2f0016-0671&partnerID=40&md5=0e5f1de6ddfe783d315e02d5eab6783b},
doi = {10.1127/0935-1221/2004/0016-0671},
issn = {09351221},
year = {2004},
date = {2004-01-01},
journal = {European Journal of Mineralogy},
volume = {16},
number = {4},
pages = {671-675},
publisher = {E. Schweizerbart'sche Verlagsbuchhandlung},
abstract = {We have studied the high-field magnetization (up to 14.5 T) and magnetic susceptibility in the temperature range 1.7-420 K of two samples of jadeite (NaAlSi2O6), white and green, containing transition metal ions and originating from Burma (now Myanmar). It appears that the high-temperature susceptibility data obey the Curie-Weiss law indicating the onset of the antiferromagnetic interaction between the magnetic ions. This interaction is also seen in the high-field magnetization data which are well described by the phenomenological cluster model. As a result of our analysis, we have identified the Fe3+ ions as the dominant ones in the studied jadeites and we have determined the molar concentration of these ions (0.8% in white- and 2.5% in green jadeite) as well as the diamagnetic susceptibility of the jadeite matrix (-3.8 × 10-7 emu/g). © 2004 E. Schweizerbart'sche Vertagsbuchhandlung.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We have studied the high-field magnetization (up to 14.5 T) and magnetic susceptibility in the temperature range 1.7-420 K of two samples of jadeite (NaAlSi2O6), white and green, containing transition metal ions and originating from Burma (now Myanmar). It appears that the high-temperature susceptibility data obey the Curie-Weiss law indicating the onset of the antiferromagnetic interaction between the magnetic ions. This interaction is also seen in the high-field magnetization data which are well described by the phenomenological cluster model. As a result of our analysis, we have identified the Fe3+ ions as the dominant ones in the studied jadeites and we have determined the molar concentration of these ions (0.8% in white- and 2.5% in green jadeite) as well as the diamagnetic susceptibility of the jadeite matrix (-3.8 × 10-7 emu/g). © 2004 E. Schweizerbart'sche Vertagsbuchhandlung.
2002
Matuszewska, A.; Czaja, M. B.
Analysis of aromatic fractions of low-temperature coal tars with the use of synchronous luminescence technique Journal Article
In: Polish Geological Institute Special Papers, vol. 7, pp. 181-188, 2002, ISSN: 15079791.
@article{2-s2.0-0036993354,
title = {Analysis of aromatic fractions of low-temperature coal tars with the use of synchronous luminescence technique},
author = { A. Matuszewska and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036993354&partnerID=40&md5=d28bc4643e8b7e4998ebfc20a0b6a058},
issn = {15079791},
year = {2002},
date = {2002-01-01},
journal = {Polish Geological Institute Special Papers},
volume = {7},
pages = {181-188},
abstract = {The qualitative analysis by synchronous luminescence technique was performed on aromatic fractions of primary tars obtained from humic and sapropelic coals (from Upper Silesia Basin). The synchronous luminescence technique, called also the technique of spectral fractionation, consists in the record of a spectrum at the constant difference between the positions of emission and excitation monochromators (Δλ). This difference is calculated as a result of subtraction of effective emission and excitation wavelengths characterising compounds identified in investigated mixture. In relation with conventional luminescence technique, giving broad, low resolved bands in the conditions of ambient temperatures, the synchronous luminescence technique enables to obtain well resolved and simplified spectra that facilitate the identification of individual components of the mixture. The application of this technique to analysis of aromatic fractions compositions of primary tars from coals of various genesis and technological properties (sapropelic and humic coals) has shown a general similarity of composition with predomination of aromatic compounds containing 2-4 condensed rings. In the sample derived from sapropelic coal, a markedly higher intensity of bands is observed, attributed to aromatics of lower condensation degree (2-3 condensed rings), in relation with the bands of aromatics with higher intensity (3-4 condensed rings). The reverse relation is observed for sample from humic coal. In both analysed samples, a series of the following individual compounds has been identified from groups of aromatics: naphthalenes, acenaphthenes, benzofluorenes, anthracenes, pyrenes, and benz(a)anthracenes. Smaller amounts of benz(a)pyrenes, benz(ghi)perylene, and 3, 4-9, 10-dibenzopyrene were also encountered. The technique of synchronous luminescence made possible, therefore, the identification of individual components of complex mixture of aromatic compounds in coal derived products. This technique is thus of great value for the characteristics of aromatic compounds in thermolysis products of coal, in the cognitive aspect, as well as in monitoring of environment.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The qualitative analysis by synchronous luminescence technique was performed on aromatic fractions of primary tars obtained from humic and sapropelic coals (from Upper Silesia Basin). The synchronous luminescence technique, called also the technique of spectral fractionation, consists in the record of a spectrum at the constant difference between the positions of emission and excitation monochromators (Δλ). This difference is calculated as a result of subtraction of effective emission and excitation wavelengths characterising compounds identified in investigated mixture. In relation with conventional luminescence technique, giving broad, low resolved bands in the conditions of ambient temperatures, the synchronous luminescence technique enables to obtain well resolved and simplified spectra that facilitate the identification of individual components of the mixture. The application of this technique to analysis of aromatic fractions compositions of primary tars from coals of various genesis and technological properties (sapropelic and humic coals) has shown a general similarity of composition with predomination of aromatic compounds containing 2-4 condensed rings. In the sample derived from sapropelic coal, a markedly higher intensity of bands is observed, attributed to aromatics of lower condensation degree (2-3 condensed rings), in relation with the bands of aromatics with higher intensity (3-4 condensed rings). The reverse relation is observed for sample from humic coal. In both analysed samples, a series of the following individual compounds has been identified from groups of aromatics: naphthalenes, acenaphthenes, benzofluorenes, anthracenes, pyrenes, and benz(a)anthracenes. Smaller amounts of benz(a)pyrenes, benz(ghi)perylene, and 3, 4-9, 10-dibenzopyrene were also encountered. The technique of synchronous luminescence made possible, therefore, the identification of individual components of complex mixture of aromatic compounds in coal derived products. This technique is thus of great value for the characteristics of aromatic compounds in thermolysis products of coal, in the cognitive aspect, as well as in monitoring of environment.
Gryzierczyk, G.; Fischer, W.; Sajewicz, M.; Kuś, P.; Wrzalik, R.; Czaja, M. B.; Dziadek, M.; Kowalska, T.
Chromotagraphic and spectroscopic analysis of the fluorescent compounds derived from monosacccharides on HPTLC-NH2 plates Journal Article
In: Journal of Planar Chromatography - Modern TLC, vol. 15, no. 6, pp. 449-453, 2002, ISSN: 09334173, (5).
@article{2-s2.0-0345619624,
title = {Chromotagraphic and spectroscopic analysis of the fluorescent compounds derived from monosacccharides on HPTLC-NH2 plates},
author = { G. Gryzierczyk and W. Fischer and M. Sajewicz and P. Kuś and R. Wrzalik and M.B. Czaja and M. Dziadek and T. Kowalska},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0345619624&doi=10.1556%2fJPC.15.2002.6.11&partnerID=40&md5=abdb94661a513fbeda615b8508b24817},
doi = {10.1556/JPC.15.2002.6.11},
issn = {09334173},
year = {2002},
date = {2002-01-01},
journal = {Journal of Planar Chromatography - Modern TLC},
volume = {15},
number = {6},
pages = {449-453},
abstract = {In this paper we present results from recent studies focusing on elucidation of the mechanism of visualization of simple sugars (e.g. D-(+)-glucose, D-(+)-galactose, and D-(-)-fructose) developed on glass TLC plates precoated with 3-aminopropyl chemically bonded stationary phase and then heated at elevated temperatures, a method originally developed, then recommended commercially, by Merck. Detection of the sugars under UV illumination is possible because of their substantial fluorescence; this suggests that during heating the analytes probably undergo a process which results in their structural transformation. We postulated a possible analogy with the Maillard reaction, omnipresent in innumerable living organisms. To verify our assumption we performed analysis with high-performance thin-layer chromatography (HPTLC), high-performance liquid chromatography (HPLC), and IR, UV, and fluorescence spectroscopy. All the results obtained seem to confirm the analogy between the Maillard reaction and the reaction of simple carbohydrates after development on the amino stationary phase.},
note = {5},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In this paper we present results from recent studies focusing on elucidation of the mechanism of visualization of simple sugars (e.g. D-(+)-glucose, D-(+)-galactose, and D-(-)-fructose) developed on glass TLC plates precoated with 3-aminopropyl chemically bonded stationary phase and then heated at elevated temperatures, a method originally developed, then recommended commercially, by Merck. Detection of the sugars under UV illumination is possible because of their substantial fluorescence; this suggests that during heating the analytes probably undergo a process which results in their structural transformation. We postulated a possible analogy with the Maillard reaction, omnipresent in innumerable living organisms. To verify our assumption we performed analysis with high-performance thin-layer chromatography (HPTLC), high-performance liquid chromatography (HPLC), and IR, UV, and fluorescence spectroscopy. All the results obtained seem to confirm the analogy between the Maillard reaction and the reaction of simple carbohydrates after development on the amino stationary phase.
Matuszewska, A.; Czaja, M. B.
Aromatic compounds in molecular phase of Baltic amber-synchronous luminescence analysis Journal Article
In: Talanta, vol. 56, no. 6, pp. 1049-1059, 2002, ISSN: 00399140, (18).
@article{2-s2.0-0037041480,
title = {Aromatic compounds in molecular phase of Baltic amber-synchronous luminescence analysis},
author = { A. Matuszewska and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0037041480&doi=10.1016%2fS0039-9140%2801%2900610-5&partnerID=40&md5=cad60397f4d8570257ab49c3c2bff485},
doi = {10.1016/S0039-9140(01)00610-5},
issn = {00399140},
year = {2002},
date = {2002-01-01},
journal = {Talanta},
volume = {56},
number = {6},
pages = {1049-1059},
publisher = {Elsevier},
abstract = {Synchronous luminescence analysis was performed in order to identify aromatic compounds in solvent extracts of Baltic amber. The investigated extracts were obtained, for comparisons, as products of extraction by various techniques and solvents. Methylene chloride and ethanol were applied independently for extraction at the ambient temperature (conservative extraction), as well as at the temperature of solvent boiling (extraction in Soxhlet apparatus). Ethanol, as the solvent, was also used for extraction in an ultrasonic bath and for the decoction process. The extraction, by techniques mentioned, of the analysed amber has resulted in products generally containing the same groups of aromatics: mainly naphthalenes, phenanthrenes and anthracenes. Among phenanthrenes, in all samples the retene was also identified, being one of the characteristic links of the diagenetic chain of chemical transformations of vegetal precursors. The identification of a series of individual compounds made, using the synchronous luminescence technique, was verified by the record of conventional emission and excitation spectra. Presented identified compounds were also confirmed by the results of GC-MS analysis. The luminescence analysis was also performed comparatively for fossil resin from Galicia, Spain (Cretaceous) older than Baltic amber (Tertiary, Eocene). The obtained preliminary results of synchronous luminescence analysis suggest the possibility of diversification in this manner of fossil resins of various ages by characterisation of aromatisation degree and alkyl substitution of aromatic rings. It is since well known that aromatisation progress is an indicator of a natural process of maturation of fossil organic matter. However, a greater number of samples should be taken to further testify to the investigations. © 2002 Elsevier Science B.V. All rights reserved.},
note = {18},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Synchronous luminescence analysis was performed in order to identify aromatic compounds in solvent extracts of Baltic amber. The investigated extracts were obtained, for comparisons, as products of extraction by various techniques and solvents. Methylene chloride and ethanol were applied independently for extraction at the ambient temperature (conservative extraction), as well as at the temperature of solvent boiling (extraction in Soxhlet apparatus). Ethanol, as the solvent, was also used for extraction in an ultrasonic bath and for the decoction process. The extraction, by techniques mentioned, of the analysed amber has resulted in products generally containing the same groups of aromatics: mainly naphthalenes, phenanthrenes and anthracenes. Among phenanthrenes, in all samples the retene was also identified, being one of the characteristic links of the diagenetic chain of chemical transformations of vegetal precursors. The identification of a series of individual compounds made, using the synchronous luminescence technique, was verified by the record of conventional emission and excitation spectra. Presented identified compounds were also confirmed by the results of GC-MS analysis. The luminescence analysis was also performed comparatively for fossil resin from Galicia, Spain (Cretaceous) older than Baltic amber (Tertiary, Eocene). The obtained preliminary results of synchronous luminescence analysis suggest the possibility of diversification in this manner of fossil resins of various ages by characterisation of aromatisation degree and alkyl substitution of aromatic rings. It is since well known that aromatisation progress is an indicator of a natural process of maturation of fossil organic matter. However, a greater number of samples should be taken to further testify to the investigations. © 2002 Elsevier Science B.V. All rights reserved.
2000
Matuszewska, A.; Czaja, M. B.
The use of synchronous luminescence spectroscopy in qualitative analysis of aromatic fraction of hard coal thermolysis products Journal Article
In: Talanta, vol. 52, no. 3, pp. 457-464, 2000, ISSN: 00399140, (18).
@article{2-s2.0-0034734008,
title = {The use of synchronous luminescence spectroscopy in qualitative analysis of aromatic fraction of hard coal thermolysis products},
author = { A. Matuszewska and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034734008&doi=10.1016%2fS0039-9140%2800%2900369-6&partnerID=40&md5=c4049690b69346310ac17515ee1bf58c},
doi = {10.1016/S0039-9140(00)00369-6},
issn = {00399140},
year = {2000},
date = {2000-01-01},
journal = {Talanta},
volume = {52},
number = {3},
pages = {457-464},
publisher = {Elsevier Science Publ Co Inc, New York},
abstract = {The synchronous luminescence method was used in qualitative analysis of aromatic fraction of low-temperature tar from hard coal. The spectra obtained by this method are simpler than spectra obtained with the use of conventional emission luminescence method. The synchronous luminescence analysis requires the selection of respective Δλ parameter values. This parameter is a constant difference between position of excitation and emission monochromators during measurement. From literature, the Δλ parameter value of 23 nm was first used here. The characteristic emission ranges of spectra obtained indicated (by comparison with spectra of standards) degree of condensation of aromatic compounds present in investigated mixtures. It was also possible to identify some individual compounds. However, this identification could be more effective with the use of the respective value of Δλ parameter for each particular component of the mixture. This manner of analysis was used here, e.g. for investigating aromatic fraction containing phenanthrene (identified previously by gas chromatography method) among other compounds. The spectrum recorded at Δλ value characteristic for phenanthrene (53nm) presents a rather simple shape with a maximum at 346 nm attributed to phenanthrene after standard and literature data. (C) 2000 Elsevier Science B.V.The synchronous luminescence method was used in qualitative analysis of aromatic fraction of low-temperature tar from hard coal. The spectra obtained by this method are simpler than spectra obtained with the use of conventional emission luminescence method. The synchronous luminescence analysis requires the selection of respective Δλ parameter values. This parameter is a constant difference between position of excitation and emission monochromators during measurement. From literature, the Δλ parameter value of 23 nm was first used here. The characteristic emission ranges of spectra obtained indicated (by comparison with spectra of standards) degree of condensation of aromatic compounds present in investigated mixtures. It was also possible to identify some individual compounds. However, this identification could be more effective with the use of the respective value of Δλ parameter for each particular component of the mixture. This manner of analysis was used here, e.g. for investigating aromatic fraction containing phenanthrene (identified previously by gas chromatography method) among other compounds. The spectrum recorded at Δλ value characteristic for phenanthrene (53 nm) presents a rather simple shape with a maximum at 346 nm attributed to phenanthrene after standard and literature data.},
note = {18},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The synchronous luminescence method was used in qualitative analysis of aromatic fraction of low-temperature tar from hard coal. The spectra obtained by this method are simpler than spectra obtained with the use of conventional emission luminescence method. The synchronous luminescence analysis requires the selection of respective Δλ parameter values. This parameter is a constant difference between position of excitation and emission monochromators during measurement. From literature, the Δλ parameter value of 23 nm was first used here. The characteristic emission ranges of spectra obtained indicated (by comparison with spectra of standards) degree of condensation of aromatic compounds present in investigated mixtures. It was also possible to identify some individual compounds. However, this identification could be more effective with the use of the respective value of Δλ parameter for each particular component of the mixture. This manner of analysis was used here, e.g. for investigating aromatic fraction containing phenanthrene (identified previously by gas chromatography method) among other compounds. The spectrum recorded at Δλ value characteristic for phenanthrene (53nm) presents a rather simple shape with a maximum at 346 nm attributed to phenanthrene after standard and literature data. (C) 2000 Elsevier Science B.V.The synchronous luminescence method was used in qualitative analysis of aromatic fraction of low-temperature tar from hard coal. The spectra obtained by this method are simpler than spectra obtained with the use of conventional emission luminescence method. The synchronous luminescence analysis requires the selection of respective Δλ parameter values. This parameter is a constant difference between position of excitation and emission monochromators during measurement. From literature, the Δλ parameter value of 23 nm was first used here. The characteristic emission ranges of spectra obtained indicated (by comparison with spectra of standards) degree of condensation of aromatic compounds present in investigated mixtures. It was also possible to identify some individual compounds. However, this identification could be more effective with the use of the respective value of Δλ parameter for each particular component of the mixture. This manner of analysis was used here, e.g. for investigating aromatic fraction containing phenanthrene (identified previously by gas chromatography method) among other compounds. The spectrum recorded at Δλ value characteristic for phenanthrene (53 nm) presents a rather simple shape with a maximum at 346 nm attributed to phenanthrene after standard and literature data.
Mazurak, Z.; Cisowski, J.; Heimann, J.; Nateprov, A.; Czaja, M. B.
Magnetic susceptibility and luminescence of α-ZnAl2S4 tiospinel doped with chromium Journal Article
In: Chemical Physics, vol. 254, no. 1, pp. 25-30, 2000, ISSN: 03010104, (14).
@article{2-s2.0-0034653097,
title = {Magnetic susceptibility and luminescence of α-ZnAl2S4 tiospinel doped with chromium},
author = { Z. Mazurak and J. Cisowski and J. Heimann and A. Nateprov and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034653097&doi=10.1016%2fS0301-0104%2800%2900026-4&partnerID=40&md5=4a8a83160dfd1d1e0eded09057fb7652},
doi = {10.1016/S0301-0104(00)00026-4},
issn = {03010104},
year = {2000},
date = {2000-01-01},
journal = {Chemical Physics},
volume = {254},
number = {1},
pages = {25-30},
abstract = {The magnetic susceptibility as well as the optical excitation and luminescence spectra of three samples of α-ZnAl2S4 tiospinel doped with Cr at various concentrations have been measured in the temperature range 77-300 K. The susceptibility has allowed us to estimate the concentration of Cr in the samples studied as lying in the range 0.01-0.06 at.%. Crystal-field theory, including spin-orbit coupling and the trigonal crystal field of the D(3d) site has been used to fit the optical data. The best-fit parameters of the tiospinel crystal are B20 = 4800},
note = {14},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The magnetic susceptibility as well as the optical excitation and luminescence spectra of three samples of α-ZnAl2S4 tiospinel doped with Cr at various concentrations have been measured in the temperature range 77-300 K. The susceptibility has allowed us to estimate the concentration of Cr in the samples studied as lying in the range 0.01-0.06 at.%. Crystal-field theory, including spin-orbit coupling and the trigonal crystal field of the D(3d) site has been used to fit the optical data. The best-fit parameters of the tiospinel crystal are B20 = 4800
Bartkowska, J. A.; Cisowski, J.; Voiron, J.; Heimann, J.; Czaja, M. B.; Mazurak, Z.
Magnetization and magnetic susceptibility of kunzite Journal Article
In: Journal of Magnetism and Magnetic Materials, vol. 221, no. 3, pp. 273-277, 2000, ISSN: 03048853, (6).
@article{2-s2.0-0034318895,
title = {Magnetization and magnetic susceptibility of kunzite},
author = { J.A. Bartkowska and J. Cisowski and J. Voiron and J. Heimann and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034318895&doi=10.1016%2fS0304-8853%2800%2900507-2&partnerID=40&md5=a5761ea9161563bb9738b74c5c9db2cb},
doi = {10.1016/S0304-8853(00)00507-2},
issn = {03048853},
year = {2000},
date = {2000-01-01},
journal = {Journal of Magnetism and Magnetic Materials},
volume = {221},
number = {3},
pages = {273-277},
publisher = {Elsevier Science Publishers B.V., Amsterdam},
abstract = {We have studied the high-field magnetization up to 14.5 T and magnetic susceptibility in the temperature range 1.6-400 K of three different samples of natural kunzite crystals, being a variety of spodumene (LiAlSi2O6) and containing transition metal ions. It appears that the total magnetization and susceptibility consist of the paramagnetic contribution following from the temperature-dependent Brillouin-type behavior of magnetic ions and temperature-independent diamagnetic contribution of the spodumene matrix which we have found as being equal to -3.5×10-7 emu/g. We have identified the Mn2+ ions as the dominant ones in the kunzites studied and we have determined the molar concentration of these ions as lying in the range 0.2-0.4%.},
note = {6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We have studied the high-field magnetization up to 14.5 T and magnetic susceptibility in the temperature range 1.6-400 K of three different samples of natural kunzite crystals, being a variety of spodumene (LiAlSi2O6) and containing transition metal ions. It appears that the total magnetization and susceptibility consist of the paramagnetic contribution following from the temperature-dependent Brillouin-type behavior of magnetic ions and temperature-independent diamagnetic contribution of the spodumene matrix which we have found as being equal to -3.5×10-7 emu/g. We have identified the Mn2+ ions as the dominant ones in the kunzites studied and we have determined the molar concentration of these ions as lying in the range 0.2-0.4%.
1997
Walker, G.; Jaer, A. El; Sherlock, R.; Glynn, T. J.; Czaja, M. B.; Mazurak, Z.
Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene crystals Proceedings
vol. 3176, 1997, ISSN: 0277786X.
@proceedings{2-s2.0-57649114701,
title = {Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene crystals},
author = { G. Walker and A. El Jaer and R. Sherlock and T.J. Glynn and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-57649114701&doi=10.1117%2f12.293447&partnerID=40&md5=484640a3b677862d8d034408123cd30f},
doi = {10.1117/12.293447},
issn = {0277786X},
year = {1997},
date = {1997-01-01},
journal = {Proceedings of SPIE - The International Society for Optical Engineering},
volume = {3176},
pages = {193-199},
abstract = {Luminescence emission and excitation spectra of a number of natural spodumene crystals have been measured at temperatures down to 12 K. Both Cr 3+ and Mn2+ centres were identified; Mn2+ is shown to be mainly in Li-sites rather than Al-sites (lODq = 6000±300 cm-1) and gives rise to a broad emission centred at 600 run. In most spodumenes Cr3+ R-line emission with phonon sideband is observed at temperatures below 100 K. In green hiddenite crystals Cr3+ emission is dominant at room temperature where the R-lines are superimposed on a broad-band emission. Calculation of the crystal-field splitting of the Cr 3+ energy levels has been carried out assuming a C2v pseudo-symmetry for the Al-sites. In the more Mn-rich crystals multiple R 1 lines are seen at temperatures below about 40 K which are possibly associated with adjacent point defects due to charge compensation effects.},
keywords = {},
pubstate = {published},
tppubtype = {proceedings}
}
Luminescence emission and excitation spectra of a number of natural spodumene crystals have been measured at temperatures down to 12 K. Both Cr 3+ and Mn2+ centres were identified; Mn2+ is shown to be mainly in Li-sites rather than Al-sites (lODq = 6000±300 cm-1) and gives rise to a broad emission centred at 600 run. In most spodumenes Cr3+ R-line emission with phonon sideband is observed at temperatures below 100 K. In green hiddenite crystals Cr3+ emission is dominant at room temperature where the R-lines are superimposed on a broad-band emission. Calculation of the crystal-field splitting of the Cr 3+ energy levels has been carried out assuming a C2v pseudo-symmetry for the Al-sites. In the more Mn-rich crystals multiple R 1 lines are seen at temperatures below about 40 K which are possibly associated with adjacent point defects due to charge compensation effects.
Jurczyk, J.; Buhl, F.; Sitko, R.; Fabiś, M.; Czaja, M. B.
Semimicroanalysis of silicate minerals by means of XRF thin layer method. Determination of selected chromatic elements - V, Cr, Mn, Fe, Co Journal Article
In: Chemia Analityczna, vol. 42, no. 5, pp. 703-713, 1997, ISSN: 00092223, (9).
@article{2-s2.0-0031522488,
title = {Semimicroanalysis of silicate minerals by means of XRF thin layer method. Determination of selected chromatic elements - V, Cr, Mn, Fe, Co},
author = { J. Jurczyk and F. Buhl and R. Sitko and M. Fabiś and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0031522488&partnerID=40&md5=d42521e3721630117415d9f839b0d8db},
issn = {00092223},
year = {1997},
date = {1997-01-01},
journal = {Chemia Analityczna},
volume = {42},
number = {5},
pages = {703-713},
abstract = {50 mg of a powdered silicate mineral is spread on a substrate (filter paper glued on to glass or teflon by means of two-sided adhesive tape), dissolved in a concentrated hydrofluoric acid and dried under an infrared heater; a sample is then protected with a Mylar film. Apparatus parameters: a sequence wavedispcrsive X-ray spectrometer; an X-ray tube with a Mo anode; 50 kV; 40 mA; Kα lines; LiF 200; flow counter; vacuum measurements; rotation of the sample; 100 s counting time for V, Cr, Mn, Co and 40 s or 100 s for Fe, according to the concentration; synthetic standards for calibration. Statistical parameters: detection limits for 50 mg samples: V (3-6 ppm), Cr (3-6 ppm), Mn (25 ppm), Fe (4-5 ppm), Co (2-7 ppm).},
note = {9},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
50 mg of a powdered silicate mineral is spread on a substrate (filter paper glued on to glass or teflon by means of two-sided adhesive tape), dissolved in a concentrated hydrofluoric acid and dried under an infrared heater; a sample is then protected with a Mylar film. Apparatus parameters: a sequence wavedispcrsive X-ray spectrometer; an X-ray tube with a Mo anode; 50 kV; 40 mA; Kα lines; LiF 200; flow counter; vacuum measurements; rotation of the sample; 100 s counting time for V, Cr, Mn, Co and 40 s or 100 s for Fe, according to the concentration; synthetic standards for calibration. Statistical parameters: detection limits for 50 mg samples: V (3-6 ppm), Cr (3-6 ppm), Mn (25 ppm), Fe (4-5 ppm), Co (2-7 ppm).
Walker, G.; Jaer, A. El; Sherlock, R.; Glynn, T. J.; Czaja, M. B.; Mazurak, Z.
Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene (LiAlSi2O6) Journal Article
In: Journal of Luminescence, vol. 72-74, pp. 278-280, 1997, ISSN: 00222313, (23).
@article{2-s2.0-18244411257,
title = {Luminescence spectroscopy of Cr3+ and Mn2+ in spodumene (LiAlSi2O6)},
author = { G. Walker and A. El Jaer and R. Sherlock and T.J. Glynn and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-18244411257&doi=10.1016%2fS0022-2313%2897%2900046-X&partnerID=40&md5=f788fe1b30429135ec7aef6359768fb5},
doi = {10.1016/S0022-2313(97)00046-X},
issn = {00222313},
year = {1997},
date = {1997-01-01},
journal = {Journal of Luminescence},
volume = {72-74},
pages = {278-280},
publisher = {Elsevier},
abstract = {Luminescence emission and excitation spectra of a number of natural spodumene crystals have been measured at temperatures down to 12 K. Both Cr3+ and Mn2+ centres were identified; Mn2+ is shown to be mainly in Li-sites rather than Al-sites and gives rise to a broad emission centred at 600 nm. In most spodumenes Cr3+ R-line emission with phonon sideband is observed at temperatures below 100 K. In the more Mn-rich crystals multiple R1 lines are seen at temperatures below about 40 K, but in Cr-rich crystals only one R1 line is observed and Cr3+ emission is evident at room temperature.},
note = {23},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Luminescence emission and excitation spectra of a number of natural spodumene crystals have been measured at temperatures down to 12 K. Both Cr3+ and Mn2+ centres were identified; Mn2+ is shown to be mainly in Li-sites rather than Al-sites and gives rise to a broad emission centred at 600 nm. In most spodumenes Cr3+ R-line emission with phonon sideband is observed at temperatures below 100 K. In the more Mn-rich crystals multiple R1 lines are seen at temperatures below about 40 K, but in Cr-rich crystals only one R1 line is observed and Cr3+ emission is evident at room temperature.
1995
Czaja, M. B.; Mazurak, Z.; Lukowiak, E.
Spectroscopic properties and crystal-field analysis of Cr3+ ions in kyanite Al2SiO5 Journal Article
In: Journal of Applied Spectroscopy, vol. 62, no. 4, pp. 648-655, 1995, ISSN: 00219037, (1).
@article{2-s2.0-77951508265,
title = {Spectroscopic properties and crystal-field analysis of Cr3+ ions in kyanite Al2SiO5},
author = { M.B. Czaja and Z. Mazurak and E. Lukowiak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951508265&doi=10.1007%2fBF02606512&partnerID=40&md5=7dc8bf61492e5b9f5e7cb932e793006d},
doi = {10.1007/BF02606512},
issn = {00219037},
year = {1995},
date = {1995-01-01},
journal = {Journal of Applied Spectroscopy},
volume = {62},
number = {4},
pages = {648-655},
abstract = {[No abstract available]},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
[No abstract available]
Czaja, M. B.; Mazurak, Z.; Godlewski, M.; Suchocki, A.
Crystal-field analysis of the Cr3+ at monoclinic symmetry (Cs) in Ca2Al3Si3O12(OH) zoisite from tanzania Journal Article
In: Journal of Applied Spectroscopy, vol. 62, no. 4, pp. 643-647, 1995, ISSN: 00219037, (3).
@article{2-s2.0-69649085543,
title = {Crystal-field analysis of the Cr3+ at monoclinic symmetry (Cs) in Ca2Al3Si3O12(OH) zoisite from tanzania},
author = { M.B. Czaja and Z. Mazurak and M. Godlewski and A. Suchocki},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-69649085543&doi=10.1007%2fBF02606511&partnerID=40&md5=fe08ec4c5ef07f316292e57b8614454a},
doi = {10.1007/BF02606511},
issn = {00219037},
year = {1995},
date = {1995-01-01},
journal = {Journal of Applied Spectroscopy},
volume = {62},
number = {4},
pages = {643-647},
abstract = {[No abstract available]},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
[No abstract available]
Mazurak, Z.; Czaja, M. B.
Optical properties of tsavorite Ca3Al2(SiO4)3:Cr3+,V3+ from Kenya Journal Article
In: Journal of Luminescence, vol. 65, no. 6, pp. 335-340, 1995, ISSN: 00222313, (4).
@article{2-s2.0-58149363511,
title = {Optical properties of tsavorite Ca3Al2(SiO4)3:Cr3+,V3+ from Kenya},
author = { Z. Mazurak and M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-58149363511&doi=10.1016%2f0022-2313%2895%2900086-0&partnerID=40&md5=1047ef9e0c7ba455507c668b0236b1ef},
doi = {10.1016/0022-2313(95)00086-0},
issn = {00222313},
year = {1995},
date = {1995-01-01},
journal = {Journal of Luminescence},
volume = {65},
number = {6},
pages = {335-340},
abstract = {Previously, a relatively large splitting of the 2Eg state of Cr3+ in grossular Ca3Al2[SiO4]3 has been reported [M. Czaja and Z. Mazurak, Opt. Mater 3 (1994) 95]. The absorption and luminescence spectra of crystals containing Cr3+ and V3+in grossular Ca3Al2(SiO4)3 garnets (variety tsavorite) have been studied for the first time. From these spectra measured at room and liquid helium temperatures we determined energies of R2, R1, and 4T2g levels of Cr3+. The lifetimes and splitting of the 2Eg state have been measured by tuning the excitation energy within the inhomogeneous profile of the R1 and R2 lines of the split 2Eg → 4A2g transition. To account for the thermal quenching of the R-lines, it is necessary to recognize that the two components of the doublet may have remarkably different radiative lifetimes (7500 and 2500 μs). These lifetimes were obtained from low temperature decay and from the temperature dependence of the intensity ratio of the R2, R1 components. These separate lifetimes as well as the lifetime of the 4T2g state were then set to fit the temperature dependence of the joint effective lifetime. The optical fluorescence of a V3+ dopant is characterized by the broad band infrared fluorescence spectrum associated with short decay time < 1μs. © 1996.},
note = {4},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Previously, a relatively large splitting of the 2Eg state of Cr3+ in grossular Ca3Al2[SiO4]3 has been reported [M. Czaja and Z. Mazurak, Opt. Mater 3 (1994) 95]. The absorption and luminescence spectra of crystals containing Cr3+ and V3+in grossular Ca3Al2(SiO4)3 garnets (variety tsavorite) have been studied for the first time. From these spectra measured at room and liquid helium temperatures we determined energies of R2, R1, and 4T2g levels of Cr3+. The lifetimes and splitting of the 2Eg state have been measured by tuning the excitation energy within the inhomogeneous profile of the R1 and R2 lines of the split 2Eg → 4A2g transition. To account for the thermal quenching of the R-lines, it is necessary to recognize that the two components of the doublet may have remarkably different radiative lifetimes (7500 and 2500 μs). These lifetimes were obtained from low temperature decay and from the temperature dependence of the intensity ratio of the R2, R1 components. These separate lifetimes as well as the lifetime of the 4T2g state were then set to fit the temperature dependence of the joint effective lifetime. The optical fluorescence of a V3+ dopant is characterized by the broad band infrared fluorescence spectrum associated with short decay time < 1μs. © 1996.
1994
Koziarska, B.; Godlewski, M.; Suchocki, A.; Czaja, M. B.; Mazurak, Z.
Optical properties of zoisite Journal Article
In: Physical Review B, vol. 50, no. 17, pp. 12297-12300, 1994, ISSN: 01631829, (14).
@article{2-s2.0-35949006319,
title = {Optical properties of zoisite},
author = { B. Koziarska and M. Godlewski and A. Suchocki and M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-35949006319&doi=10.1103%2fPhysRevB.50.12297&partnerID=40&md5=652dc26bb7cf22b43d44a0a83ab97ed7},
doi = {10.1103/PhysRevB.50.12297},
issn = {01631829},
year = {1994},
date = {1994-01-01},
journal = {Physical Review B},
volume = {50},
number = {17},
pages = {12297-12300},
abstract = {The optical absorption, luminescence, luminescence excitation, and luminescence decay kinetics of a dopant with a 3d3 shell (most probably Cr3+) and V3+ ions in natural Ca2Al3Si3O12(OH) zoisite crystal have been measured. The splitting of the R lines for a dopant with a 3d3 shell, equal to 340 cm-1, is one of the largest known. The very broad infrared luminescence spectrum is associated with various dopants present in the crystal. We show that possible application of zoisite as a laser material is hindered by efficient nonradiative transitions at room temperature related to the presence of trace impurities. © 1994 The American Physical Society.},
note = {14},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The optical absorption, luminescence, luminescence excitation, and luminescence decay kinetics of a dopant with a 3d3 shell (most probably Cr3+) and V3+ ions in natural Ca2Al3Si3O12(OH) zoisite crystal have been measured. The splitting of the R lines for a dopant with a 3d3 shell, equal to 340 cm-1, is one of the largest known. The very broad infrared luminescence spectrum is associated with various dopants present in the crystal. We show that possible application of zoisite as a laser material is hindered by efficient nonradiative transitions at room temperature related to the presence of trace impurities. © 1994 The American Physical Society.
Czaja, M. B.; Mazurak, Z.
Crystal-field analysis of Cr3+ in grossular Ca3Al2(SiO4)3 Journal Article
In: Optical Materials, vol. 3, no. 2, pp. 95-98, 1994, ISSN: 09253467, (3).
@article{2-s2.0-0028444272,
title = {Crystal-field analysis of Cr3+ in grossular Ca3Al2(SiO4)3},
author = { M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0028444272&doi=10.1016%2f0925-3467%2894%2990012-4&partnerID=40&md5=e2ca12c561cbedb29d6d384443bb1ed0},
doi = {10.1016/0925-3467(94)90012-4},
issn = {09253467},
year = {1994},
date = {1994-01-01},
journal = {Optical Materials},
volume = {3},
number = {2},
pages = {95-98},
abstract = {The optical absorption and luminescence spectra of Cr3+ in Ca3Al2(SiO4)3 natural garnet (Grossular) measured at room and LHeT were reported the first time in Mazurak [Opt. Mater., this issue]. The spectra have been used for determined energies of R2, R1, ZPL, vibrational modes and2E, 4T2, 4T1 levels. We have extended our investigations, the spectra of Cr3+ in Ca3Al2(SiO4)3 are analyzed using a C3i crystal-field Hamiltonian. The energy levels and the crystal-field parameters Bnm for Cr3+ ion in Ca3Al2(SiO4)3 single crystal, including spin-orbit and ligand-field interactions, have been calculated. The resulting crystal-field parameters Bnm represent very well the crystal-field interactions of Cr3+ in Grossular Ca3Al2(SiO4)3. © 1994.},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The optical absorption and luminescence spectra of Cr3+ in Ca3Al2(SiO4)3 natural garnet (Grossular) measured at room and LHeT were reported the first time in Mazurak [Opt. Mater., this issue]. The spectra have been used for determined energies of R2, R1, ZPL, vibrational modes and2E, 4T2, 4T1 levels. We have extended our investigations, the spectra of Cr3+ in Ca3Al2(SiO4)3 are analyzed using a C3i crystal-field Hamiltonian. The energy levels and the crystal-field parameters Bnm for Cr3+ ion in Ca3Al2(SiO4)3 single crystal, including spin-orbit and ligand-field interactions, have been calculated. The resulting crystal-field parameters Bnm represent very well the crystal-field interactions of Cr3+ in Grossular Ca3Al2(SiO4)3. © 1994.
1993
Czaja, M. B.; Mazurak, Z.
Vibrational structure of luminiscence spectrum of Cr3+ in MgAl2O4 Journal Article
In: Physics and Chemistry of Minerals, vol. 20, no. 2, pp. 120-122, 1993, ISSN: 03421791, (7).
@article{2-s2.0-0027446799,
title = {Vibrational structure of luminiscence spectrum of Cr3+ in MgAl2O4},
author = { M.B. Czaja and Z. Mazurak},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027446799&doi=10.1007%2fBF00207205&partnerID=40&md5=791eaad5af811b26959f7cb88a0f9785},
doi = {10.1007/BF00207205},
issn = {03421791},
year = {1993},
date = {1993-01-01},
journal = {Physics and Chemistry of Minerals},
volume = {20},
number = {2},
pages = {120-122},
publisher = {Springer-Verlag},
abstract = {The optical absorption and luminescence spectra of MgAl2O4:Cr3+ natural spinel (from Ural) have been measured at 77 K and 293 K. The luminescent emission from 4T2 g, 2Eg covers wide region of 600-750 nm. The emission spectrum at 77 K shows a very rich vibrational structure which can be mainly explained through the vibrational modes of the oxygen octahedron. © 1993 Springer-Verlag.},
note = {7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The optical absorption and luminescence spectra of MgAl2O4:Cr3+ natural spinel (from Ural) have been measured at 77 K and 293 K. The luminescent emission from 4T2 g, 2Eg covers wide region of 600-750 nm. The emission spectrum at 77 K shows a very rich vibrational structure which can be mainly explained through the vibrational modes of the oxygen octahedron. © 1993 Springer-Verlag.
1985
Czaja, M. B.
Determination of the crystallinity of chalcedonies. Journal Article
In: Mineralogia Polonica, vol. 16, no. 1, pp. 11-26, 1985, (1).
@article{2-s2.0-0022166902,
title = {Determination of the crystallinity of chalcedonies.},
author = { M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0022166902&partnerID=40&md5=866303b532bd090ab653acfbe3336027},
year = {1985},
date = {1985-01-01},
journal = {Mineralogia Polonica},
volume = {16},
number = {1},
pages = {11-26},
abstract = {Crystallinity studies using XRD and IR methods are reported for 12 samples of quartz together with 16 samples of chalcedony. The X-ray crystallinity index of Murata & Norman (M.A. 78-2067) was found to give reliable results but the IR spectroscopic index K of Plyusnina (M.A. 80-0148, 4819) failed to arrange the samples according to the degree of order. -R.A.H.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Crystallinity studies using XRD and IR methods are reported for 12 samples of quartz together with 16 samples of chalcedony. The X-ray crystallinity index of Murata & Norman (M.A. 78-2067) was found to give reliable results but the IR spectroscopic index K of Plyusnina (M.A. 80-0148, 4819) failed to arrange the samples according to the degree of order. -R.A.H.
1983
Czaja, M. B.
The occurrence of mixed-layer chlorite/vermiculite at Lubiechowa (the Kaczawskie Mts.). Journal Article
In: Mineralogia Polonica, vol. 14, no. 1-2, pp. 67-74, 1983.
@article{2-s2.0-0020866536,
title = {The occurrence of mixed-layer chlorite/vermiculite at Lubiechowa (the Kaczawskie Mts.).},
author = { M.B. Czaja},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0020866536&partnerID=40&md5=994f27fd9f8923e60c87c98be9e7ea96},
year = {1983},
date = {1983-01-01},
journal = {Mineralogia Polonica},
volume = {14},
number = {1-2},
pages = {67-74},
abstract = {One of the clay minerals filling vesicles in melaphyres at Lubiechowa was subjected to various treatments involving saturation with Mg and K ions and treatment with ethylene glycol and glycerol. It was found that the mineral consists of chlorite and mixed-layer chlorite/vermiculite. Using Mering's method it is shown that two types of structure are present: the chlorite content is 80% in one type and approx 30% in the other. The effect of acetic acid treatment on the layers making up the structure of the mineral was also studied.-P.Br.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
One of the clay minerals filling vesicles in melaphyres at Lubiechowa was subjected to various treatments involving saturation with Mg and K ions and treatment with ethylene glycol and glycerol. It was found that the mineral consists of chlorite and mixed-layer chlorite/vermiculite. Using Mering's method it is shown that two types of structure are present: the chlorite content is 80% in one type and approx 30% in the other. The effect of acetic acid treatment on the layers making up the structure of the mineral was also studied.-P.Br.