Mossbauer isomer shifts and the nephelauxetic effect in LiNbO3 crystals

被引：6
|
作者：
Gao, FM [1 ]
机构：
[1] Yanshan Univ, Dept Chem Engn, Qinhuangdao 066004, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 41期
关键词：
D O I：
10.1088/0953-8984/15/41/L02
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The nature of the impurity Centre in LiNbO3 has been a subject of intense discussion in recent years. A semi-empirical model, based on the Phillips theory of bonding, has been developed to provide a quantitative explanation of the nephelauxetic effect of Cr3+ ions and Mossbauer isomer shifts of Fe ions in LiNbO3 crystals. The results show quantitatively that the impurity Cr3+ substitutes for the Nb5+ ions rather than the Li+ ions in stoichiometric LiNbO3 crystals, and it is verified that Fe ions substitute at Li sites in LiNbO3.
引用
收藏
页码：L637 / L641
页数：5
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