Investigations of EPR parameters and defect models for three Yb(3+) impurity centers in ThO(2) and CeO(2) crystals

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	Investigations of EPR parameters and defect models for three Yb(3+) impurity centers in ThO(2) and CeO(2) crystals
	H. G. Liu; W. C. Zheng; W. Q. Yang
	2010
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	405 期号:9 页码:2326-2328
摘要	The electron paramagnetic resonance (EPR) parameters (g factors g(parallel to), g(perpendicular to) and hyperfine structure constants (171)A(parallel to), (171)A(perpendicular to), (173)A(parallel to) and (173)A(perpendicular to)) for three Yb(3+) centers, one cubic (center I) and two trigonal (centers II and III). in ThO(2) and CeO(2) crystals are studied from a complete diagonalization (of energy matrix) method. In the method, the Zeeman and hyperfine interaction terms are added to the classical Hamiltonian and the crystal-field parameters are calculated from the empirical superposition model. From the studies, the EPR parameters for these Yb(3+) centers in ThO(2) and CeO(2) crystals are reasonably explained, the defect model for the trigonal Yb(3+) center II suggested in the previous paper is confirmed and the defect structure of center II are also obtained. The theoretical hyperfine structure constants A of two Yb isotopes for centers II and III are suggested and remain to be checked by further experiments. The results are discussed. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[liu, hong-gang; zheng, wen-chen; 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.;liu, hg (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;kezhouliu@163.com
关键词	Electron Paramagnetic Resonance Crystal-field Theory Defect Structure Yb(3+) Tho(2) And Ceo(2) Crystals Spin-hamiltonian Parameters Superposition-model Optical Spectroscopy Field Parameters Resonance Garnets Sites Oxide Ions Eu3++
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31290
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. G. Liu,W. C. Zheng,W. Q. Yang. Investigations of EPR parameters and defect models for three Yb(3+) impurity centers in ThO(2) and CeO(2) crystals[J]. Physica B-Condensed Matter,2010,405(9):2326-2328.
APA	H. G. Liu,W. C. Zheng,&W. Q. Yang.(2010).Investigations of EPR parameters and defect models for three Yb(3+) impurity centers in ThO(2) and CeO(2) crystals.Physica B-Condensed Matter,405(9),2326-2328.
MLA	H. G. Liu,et al."Investigations of EPR parameters and defect models for three Yb(3+) impurity centers in ThO(2) and CeO(2) crystals".Physica B-Condensed Matter 405.9(2010):2326-2328.