EXAFS investigation on the structural environment of TM3+ in Ge-Ga-S-CsBr glasses
EXAFS investigation on the structural environment of TM3+ in Ge-Ga-S-CsBr glasses
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DOI：
10.1016/j.jnoncrysol.2006.09.045
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发表时间：
2007-05
影响因子：
3.5
通讯作者：
J. Song;Y. Choi;K. Kadono;K. Fukumi;H. Kageyama;J. Heo
中科院分区：
文献类型：
--
作者：
J. Song;Y. Choi;K. Kadono;K. Fukumi;H. Kageyama;J. Heo
使用扩展X射线吸收精细结构（EXAFS）光谱研究了Ge0.25Ga0.10S0.65和0.90（Ge0.25Ga0.10S0.65）−0.10CsBr玻璃中Tm3+周围的局部结构。在Ge0.25Ga0.10S0.65玻璃中，Tm3+离子被大约七个S离子包围。由于 Tm3+ 离子周围局部结构的变化，添加 10mol% CsBr 导致 Tm3+ 离子的 EXAFS 谱发生显着变化。 Tm3+离子周围的第一个最近的配位壳主要由 0.90 (Ge0.25Ga0.10S0.65)−0.10CsBr 玻璃中的大约六个 Br 离子组成。
The local structures around Tm3+in Ge0.25Ga0.10S0.65and 0.90 (Ge0.25Ga0.10S0.65)−0.10CsBr glasses were investigated using Extended X-ray absorption fine structure (EXAFS) spectroscopy. In Ge0.25Ga0.10S0.65glass, Tm3+ions are surrounded by approximately seven S ions. Addition of 10mol% CsBr resulted in significant changes in the EXAFS spectrum of Tm3+ions due to the changes in the local structure surrounding Tm3+ions. The first-nearest coordination shell around Tm3+ion is predominantly composed of about six Br ions in 0.90 (Ge0.25Ga0.10S0.65)−0.10CsBr glass.