| Инд. авторы: | Omelkov S.I., Kiisk V., Sildos I., Kirm M., Nagirnyi V., Pustovarov V.A., Isaenko L.I., Lobanov S.I. |
| Заглавие: | The luminescence microspectroscopy of Pr3+-doped LiBaAlF 6 and Ba3Al2F12 crystals |
| Библ. ссылка: | Omelkov S.I., Kiisk V., Sildos I., Kirm M., Nagirnyi V., Pustovarov V.A., Isaenko L.I., Lobanov S.I. The luminescence microspectroscopy of Pr3+-doped LiBaAlF 6 and Ba3Al2F12 crystals // Radiation Measurements. - 2013. - Vol.56. - P.49-53. - ISSN 1350-4487. |
| Внешние системы: | DOI: 10.1016/j.radmeas.2013.01.030; SCOPUS: 2-s2.0-84884814961; |
| Реферат: | eng: The combined luminescence and Raman-scattering microspectroscopy technique allows separate spectroscopic studies on several crystal phases in mixed compounds. A mixed sample of LiBaAlF6 and Ba3Al 2F12 doped with Pr was studied. The Pr3+ concentration was found to be much higher in the Ba3Al 2F12 phase. Several non-equivalent Pr3+ centers are present in both compounds, however, only in Ba3Al 2F12 there are several non-equivalent crystallographic positions of Ba. In LiBaAlF6 non-equivalent Pr3+ centers appear because of complicated scheme for charge compensation of ( PrBa3+)+. Possible reasons of Ba3Al2F 12 formation in the process of Pr3+:LiBaAlF6 growth are discussed. An excess of LiF in melt is assumed to produce ( LiBa+)- antisite defects as a charge compensation for ( PrBa3+)+ substitution. © 2013 Elsevier Ltd. All rights reserved.
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| Ключевые слова: | Point defects; Photoluminescence; Luminescence; Aluminum; Spectroscopic studies; Mixed samples; Micro spectroscopy; LiBaAlF6; Barium compounds; Crystal phasis; Charge compensation; Anti-site defect; Pr3+ ions; Photoluminescence; Microspectroscopy; LiBaAlF6; Ba 3Al2F12; Crystallographic position; Spectroscopic analysis; |
| Издано: | 2013 |
| Физ. характеристика: | с.49-53 |