Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3

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	Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3
	S. Y. Wu; H. N. Dong
	2005
发表期刊	Materials Letters
ISSN	0167-577X
卷号	59 期号:22 页码:2751-2754
摘要	The local structure and the electron paramagnetic resonance (EPR) g factors for the tetragonal Er3+ center in KMgF3 are theoretically studied by using the perturbation formulas of the g factors for a 4f(11) ion in tetragonal symmetry. In these formulas, the contributions to the g factors from the second-order perturbation terms and the admixtures of various states are taken into account. Based on the studies, the impurity Er3+ is expected to occupy the octahedral Mg2+ site, associated with an oxygen ion substituting for one of the nearest F- (i.e., O-F) in the C-4 axis, due to charge compensation. Because of the electrostatic attraction of the compensator O-F, the Er3+ ion is found to take an axial displacement Delta Z (approximate to 0.07 angstrom) towards the compensator along the C-4 axis. The calculated g factors based on the above displacement Delta Z show reasonable agreement with the observed values. (C) 2005 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. chongqing univ posts & telecommun, coll elect engn, chongqing 400065, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;wushaoyi@netease.com
关键词	Defects Electron Paramagnetic Resonance (Epr) Crystal Fields Er3++ Kmgf3 Electron-paramagnetic-resonance Superposition-model Analysis Ce3++ Luminescent Centers Crystal-field Perovskite Kmgf3 Parameters Conversion Fluorides Site Ion
URL	查看原文
WOS记录号	WOS:000230683900007
引用统计	被引频次：13[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/321006/35120
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wu,H. N. Dong. Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3[J]. Materials Letters,2005,59(22):2751-2754.
APA	S. Y. Wu,&H. N. Dong.(2005).Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3.Materials Letters,59(22),2751-2754.
MLA	S. Y. Wu,et al."Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3".Materials Letters 59.22(2005):2751-2754.