Structural and spectroscopic features of Ca9M(PO4)7 (M = Al3+, Lu3+) whitlockites doped with Pr3+ ions
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- 作者：A. Watrasa ; A.Watras@int.pan.wroc.pl" class="auth_mail" title="E-mail the corresponding author ; I. Carrascob ; R. Pazika ; R.J. Wiglusza ; F. Piccinellib ; M. Bettinellib ; P.J. Derena
- 关键词：Whitlockite ; Pr3+ ; Disordered material ; Optical spectroscopy
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：5 July 2016
- 年：2016
- 卷：672
- 期：Complete
- 页码：45-51
- 全文大小：2443 K
文摘
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Doping Pr3+ ions creates Ca vacancies in Ca9Al(PO4)7 phosphates.
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Pr3+ ions enter three sites in Ca9Al(PO4)7 and four sites in Ca9Lu(PO4)7.
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The 1D2 emission shows strong concentration quenching in both whitlockites.
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The 3P0 emission remains constant for all concentration in both whitlockites.
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Mechanisms responsible for quenching are MPR and cross-relaxation processes.