Cr3+ ions location in codoped LiNbO3:Sc2O3 crystals

被引：1

作者：

Jaque, D

Romero, JJ

Sanz-García, JA

De Cárcer, IA

Camarillo, E

Jaque, F ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Mat, E-28049 Madrid, Spain

[2] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City, DF, Mexico

来源：

RADIATION EFFECTS AND DEFECTS IN SOLIDS | 2001年 / 155卷 / 1-4期

关键词：

LiNbO3; SC2O3; optical spectroscopy; EPR;

D O I：

10.1080/10420150108214120

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper reports the optical spectroscopy (absorption and luminescence) and electron paramagnetic resonance (EPR) of codoped SC2O3 LiNbO3:Cr crystals (Sc3+ ions concentration was varied from 0 to 7%). Two kinds of Cr3+ ions: Cr-Li(3+) and C-Nb(3+) ccntres were observed with optical and magnetic characteristics very similar to that reported in MgO and ZnO codoped LiNbO3:Cr crystals. However in Sc2O3 codoped samples the Cr-Li(3+) centre is predominant in all the Sc2O3 concentration ranges examined. At variance with codoped MgO and ZnO, only a partial Cr3+ centre redistribution takes place for a Sc3+ ions content around 3%. This critical value is discussed considering a charge compensation model.

引用

页码：235 / 239

页数：5

共 3 条

[1] DEFECT STRUCTURE DEPENDENCE ON COMPOSITION IN LITHIUM-NIOBATE [J].