Yellow fluorescence from baghdadite and synthetic Ca3(Zr,Ti)Si2O9

被引：0
|
作者：
I. Aierken Sidike
N. Kusachi
机构：
[1] Xinjiang Normal University,School of Maths
[2] Okayama University,Physics and Information Sciences
[3] Okayama University,Department of Earth Sciences, Faculty of Education
来源：
Physics and Chemistry of Minerals | 2006年 / 32卷
关键词：
Baghdadite; Fluorescence; Photoluminescence; Ca; (Zr,Ti)Si; O;
D O I：
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中图分类号：
学科分类号：
摘要：
Baghdadite from Fuka, Okayama Prefecture, Japan shows a bright yellow fluorescence under UV (Hg 253.7 nm) excitation. The photoluminescence (PL) spectrum at 300 K consists of one large band near 580 nm and two small UV bands at 318 and 397 nm. The optical excitation spectrum of the bright yellow fluorescence consists of two bands near 220 and 250 nm. The temperature dependence of the PL intensity exhibits linear thermal quenching. To reveal the origin of the bright yellow fluorescence from baghdadite, powder Ca3(Zr,Ti)Si2O9 crystals are synthesized. Synthetic Ca3(Zr,Ti)Si2O9 shows luminescence spectra similar to those of baghdadite, and the intensity of the yellow fluorescence is markedly increased by titanium addition. The origin of the bright yellow fluorescence from baghdadite is ascribed to the existence of titanium.
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页码：665 / 669
页数：4
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