Defect model and EPR parameters for the tetragonal Yb3+ center in KTaO3 crystal

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	Defect model and EPR parameters for the tetragonal Yb3+ center in KTaO3 crystal
	W. L. Feng; H. G. Liu; W. C. Zheng
	2008
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
ISSN	1386-1425
卷号	71 期号:2 页码:559-561
摘要	The defect model of the tetragonal Yb3+ (at K+ site) center in KTaO3 crystal is suggested, i.e., Yb3+ ion does not occupy the ideal K+ site, but is displaced by an amount Delta Z along one of (100) axes because of the much smaller ionic radius of Yb3+ compared with that of the replaced K+. Based on the defect model, the 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), (173)A(perpendicular to)) are calculated by diagonalizing the 14 x 14 complete energy matrix. The calculated values are in agreement with the observed values and the off-center displacement Delta Z (approximate to 0.2 angstrom) is estimated from the calculations. These results are discussed. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[feng, wen-lin; liu, hong-gang; zheng, wen-chen] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [feng, wen-lin] chongqing inst technol, dept appl phys, chongqing 400050, 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;zhengwcl@163.com
关键词	Electron Paramagnetic Resonance (Epr) Defect Model Crystal-field Theory Yb3++ Ktao3 Superposition Model Single-crystals Fe3++ Ions Field Resonance
URL	查看原文
WOS记录号	WOS:000261046200041
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32752
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. L. Feng,H. G. Liu,W. C. Zheng. Defect model and EPR parameters for the tetragonal Yb3+ center in KTaO3 crystal[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2008,71(2):559-561.
APA	W. L. Feng,H. G. Liu,&W. C. Zheng.(2008).Defect model and EPR parameters for the tetragonal Yb3+ center in KTaO3 crystal.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,71(2),559-561.
MLA	W. L. Feng,et al."Defect model and EPR parameters for the tetragonal Yb3+ center in KTaO3 crystal".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 71.2(2008):559-561.