Investigations of the electron paramagnetic resonance parameters and defect structures for Cu2+ ions in BeO crystal with trigonally distorted tetrahedral symmetry

被引：1

作者：

Fang, Wang ^{[1
]}

Yang, Da-Xiao ^{[1
]}

Chen, Heng-Jie ^{[1
]}

Cheng, Wen-De ^{[1
]}

Zheng, Wen-Chen ^{[2
,3
]}

机构：

[1] Chongqing Univ Sci & Technol, Dept Math & Phys, Chongqing 401331, Peoples R China

[2] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Sichuan, Peoples R China

[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Liaoning, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2019年 / 475卷

关键词：

Electron paramagnetic resonance (EPR); BeO:Cu2+; Defect structure; Crystal - and ligand- field theory; MAGNETIC-PROPERTIES; BERYLLIUM-OXIDE; EPR; IMPURITIES; WURTZITE; COPPER;

D O I：

10.1016/j.jmmm.2018.11.081

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron paramagnetic resonance(EPR) parameters (g factors g(i), and hyperfine structure constants A(i), where i = x, z) for Cu2+ ions embedded in beryllium oxide (BeO) crystal at Be2+ sites with C-3v local symmetry have been calculated by the complete diagonalization method (CDM) and high-order perturbation theory method (PTM). The calculated results from the two methods are in reasonable agreement with the observed data available. The defect structural data of the trigonal Cu2+ center in beryllium oxide are determined from the calculations and analyses. The calculated results show that the Be2+ ions are replaced by Cu2+ ions in BeO crystal and the ligands undergo outward movement.

引用

页码：234 / 239

页数：6

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