Calculation of the electronic polarizability of an O2- ion in stoichiometric LiNbO3

被引：8
|
作者：
Yatsenko, AV [1 ]
机构：
[1] Taurida Natl Univ, UA-95007 Simferopol, Ukraine
来源：
PHYSICA B-CONDENSED MATTER | 2001年 / 305卷 / 3-4期
关键词：
electronic polarizability; lithium niobate; Coulomb interactions; ferroelectrics;
D O I：
10.1016/S0921-4526(01)00532-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A method for calculating the electronic polarizability of ions in optical single-axis crystals is presented. It is shown that the mixed ionic-covalent type of interionic bond leads to considerable anisotropy of the electronic polarizability of the O2- ion. The principal components of the electronic polarizability tensor of the O2- ion and the probable value of the electronic polarizability of the Nb5+ ion in LiNbO3 are calculated. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：287 / 292
页数：6
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