EPR of a monoclinic Gd3+-center in MgNb2O6 single crystals

被引：7

作者：

Bravo, D ^{[1
]}

Polgar, K ^{[1
]}

Lopez, FJ ^{[1
]}

机构：

[1] HUNGARIAN ACAD SCI,CRYSTAL PHYS RES LAB,H-1502 BUDAPEST,HUNGARY

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 02期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/S0038-1098(97)00153-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An electron paramagnetic resonance (EPR) investigation of trivalent gadolinium impurities in MgNb2O6 single crystals is reported. The intense resonance lines in the EPR spectrum are assigned to a unique center produced by incorporation of Gd3+ impurities at the Mg2+ sites of the lattice. The EPR spectrum of this center is satisfactorily explained by means of a spin Hamiltonian of monoclinic symmetry and spin S = 7/2, for which all non-zero g-matrix components and fine-structure B-n(m) parameters have been determined by means of a least-squares fitting procedure. Moreover, a comparison with different Gd3+ as well as other rare-earth centers observed in LiNbO3 has been carried out. (C) 1997 Elsevier Science Ltd.

引用

页码：65 / 69

页数：5

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