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

页码：1251 / 1254

页数：4

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