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
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
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.
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.
2000
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.
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.