EPR investigation of substitution position for Fe3+ in LiNbO3:Fe 3+ system

被引：9

作者：

Wang, H

Kuang, XY ^{[1
]}

Dong, D

Xiong, Y

Zhou, KW

机构：

[1] Sichuan Univ, Inst Atom & Mol Phys, Dept Phys, Chengdu 610065, Peoples R China

[2] Acad Sinica, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

[3] Xihua Univ, Inst Appl Phys, Chengdu 610039, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 367卷 / 1-4期

基金：

中国国家自然科学基金;

关键词：

LiNbO3 : Fe3+ system; double-displacement model; local lattice structure distortion; EPR spectrum;

D O I：

10.1016/j.physb.2005.05.049

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The substitution position of the Fe3+ ion in lithium niobate is a disputed and interesting problem. In the present work, by diagonalizing the complete energy matrices for a d(5) configuration ion in a trigonal ligand-field and considering the second-order, fourth-order EPR parameters D and (a - F) simultaneously, the substitution position of Fe3+ ion in LiNbO3:Fe3+ system and the local lattice structure around impurity Fe3+ ion have been studied. Our results indicate that the EPR parameters D and (a - F) all show good agreement with those obtained from experiments, whether the Fe3+ is at Li+ or Nb5+ site, by means of the double-displacement model. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：53 / 60

页数：8

共 35 条

[1] FERROELECTRIC LITHIUM NIOBATE .3. SINGLE CRYSTAL X-RAY DIFFRACTION STUDY AT 24 DEGREES C [J].