LOCAL ENVIRONMENT OF MN2+ AND CR3+ CENTERS IN LINBO3 - DISCUSSION OF RECENT ENDOR RESULTS

被引：15

作者：

CORRADI, G ^{[1
]}

SOTHE, H ^{[1
]}

SPAETH, JM ^{[1
]}

POLGAR, K ^{[1
]}

机构：

[1] UNIV GESAMTHSCH PADERBORN,FACHBEREICH PHYS,W-4790 PADERBORN,GERMANY

来源：

FERROELECTRICS | 1992年 / 125卷 / 1-4期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1080/00150199208017083

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent electron nuclear double resonance (ENDOR) experiments on Mn2+ in LiNbO3 allowed to identify the on-axis Nb neighbours together with several Li shells with one nearest neighbour Li missing, but failed to resolve the nearest off-axis Nb shell. This failure was attributed to local disorder. We discuss here that the nearby Li vacancy may be filled by a Nb which has relaxed from its normal lattice site, while Mn2+ remains on a Li site. In the case of Cr3+ in heavily Mg-codoped LiNbO3 substitution was shown to be on the Nb site. This assignement and its dependence on Mg is confirmed by a comparison of the Cr-53 quadrupole and ESR data in LiNbO3 and Al2O3.

引用

页码：295 / 299

页数：5

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