EXAFS investigation on the structural environment of TM3+ in Ge-Ga-S-CsBr glasses

被引：21
|
作者：
Song, Jay Hyok
Choi, Yong Gyu
Kadono, Kohei
Fukumi, Kohei
Kageyama, Hiroyuki
Heo, Jong [1 ]
机构：
[1] Pohang Univ Sci & Technol, Ctr Informat Mat, Pohang 790784, Gyeongbuk, South Korea
[2] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, Gyeongbuk, South Korea
[3] Hankuk Aviat Univ, Dept Mat Sci & Engn, Goyang 412791, Gyeonggi, South Korea
[4] Natl Inst Adv Ind Sci & Technol, Ikeda, Osaka 5638577, Japan
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2007年 / 353卷 / 13-15期
基金：
新加坡国家研究基金会;
关键词：
chalcogenides; chalcohalides; rare-earths in glasses; X-ray absorption;
D O I：
10.1016/j.jnoncrysol.2006.09.045
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The local structures around Tm3+ in Ge-0.25 Ga0.10S0.65 and 0.90 (Geo(0.25)Gao(0.10)S(0.65)) - 0.10CsBr glasses were investigated using Extended X-ray absorption fine structure (EXAFS) spectroscopy. In Geo(0.25)Ga(0.10)S(0.65) glass, TM3+ ions are surrounded by approximately seven S ions. Addition of 10 mol% 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) - 0.10 CsBr glass. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1251 / 1254
页数：4
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