EPR and infrared absorption study in MgO CO-doped LiNbO3 crystals

被引：7

作者：

DiazCaro, J ^{[1
]}

GarciaSole, J ^{[1
]}

Bravo, D ^{[1
]}

Han, TPJ ^{[1
]}

Jaque, F ^{[1
]}

Henderson, B ^{[1
]}

机构：

[1] UNIV STRATHCLYDE,DEPT PHYS & APPL PHYS,GLASGOW G1 1XN,LANARK,SCOTLAND

来源：

FERROELECTRICS LETTERS SECTION | 1997年 / 23卷 / 1-2期

关键词：

D O I：

10.1080/07315179708203403

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In this work the electron spin resonance (ESR) and OH- infrared absorption spectroscopies have been used in the study of LiNbO3:Cr3+ crystals codoped with MgO. It has been confirmed that the principal defect site at low MgO concentration is the Cr3+(Li+) centre. For MgO concentration higher than 4%, Cr3+ ions located in Nb5+ site is the dominant centre. The OH- infrared absorption bands at 2827 nm and 2851 nn are attributed to the OH--Mg2+(Nb5+) and Cr3+(Li+)-OH--Mg2+(Nb5+) clusters respectively. Evidence supporting this assignment is presented.

引用

页码：27 / 35

页数：9

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