Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals

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	Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals
	W. C. Zheng; G. Q. Qu; H. G. Liu; W. Q. Yang
	2010
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
ISSN	1386-1425
卷号	77 期号:1 页码:276-278
摘要	The electron paramagnetic resonance (EPR) parameters (g factors and hyperfine structure constants of the ground state, and g factors of the first excited state) of three (one cubic and two trigonal) Er(3+) centers in fluoride-type ThO(2) crystal are studied from a diagonalization (of energy matrix) method. In the method, the Zeeman and hyperfine interaction terms are added to the classical Hamiltonian, and a 52 x 52 energy matrix concerning the ground multiplet (4)I(15/2) and the first to third excited multiplets (4)I(13/2), (4)I(11/2) and (4)I(9/2) is established for a 4f(11) ion in trigonal crystal field and under an external magnetic field. From the studies, the EPR parameters for three Er(3+) centers in ThO(2) are reasonably explained, the defect models for the two trigonal Er(3+) centers suggested in the previous paper are confirmed and the defect structures of the two trigonal centers are obtained. The results are discussed. (c) 2010 Elsevier B.V. All rights reserved.
部门归属	[zheng wen-chen; qu gui-qiang; liu hong-gang; yang wei-qing] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [yang wei-qing] chengdu univ informat technol, dept opt & elect, chengdu 610225, peoples r china. [zheng wen-chen] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zheng, wc (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;zhengwc1@163.com
关键词	Electron Paramagnetic Resonance Crystal-field Theory Defect Model Er(3+) Tho(2) Electron-paramagnetic-resonance Energy-level Analysis Superposition-model Optical-spectra Single-crystals Thorium-oxide Field Ion Systems Garnet
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31765
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Zheng,G. Q. Qu,H. G. Liu,et al. Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2010,77(1):276-278.
APA	W. C. Zheng,G. Q. Qu,H. G. Liu,&W. Q. Yang.(2010).Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,77(1),276-278.
MLA	W. C. Zheng,et al."Studies of the EPR parameters and defect models for three Er(3+) impurity centers in ThO(2) crystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 77.1(2010):276-278.