Investigations of the electron paramagnetic resonance g factors Er3+-V-K for the trigonal ErK centers in KMF3 (M = Mg and Zn)

IMR OpenIR

	Investigations of the electron paramagnetic resonance g factors Er3+-V-K for the trigonal ErK centers in KMF3 (M = Mg and Zn)
	S. Y. Wu; H. N. Dong; W. H. Wei
	2004
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	283 期号:2-3 页码:270-275
摘要	The electron paramagnetic resonance g factors g(parallel to) and g(perpendicular to) for the trigonal Er3+-V-K centers (where V-K denotes K+ vacancy) in KMF3 (M = Mg and Zn) are theoretically investigated from the perturbation formulas of the g factors for a 4f(11) ion in trigonal symmetry. In these formulas, the contributions to the g factors from the second-order perturbation terms and the admixture of various energy levels are taken into account. In the above trigonal centers, the impurity Er3+ resides in the octahedral M2+ site of both crystals, associated with one V-K in the C-3-axis due to charge compensation. By analyzing their g factors, we find that the impurity Er3+ in both centers would move towards the V-K by an amount DeltaZ along the C-3-axis due to electrostatic attraction. The calculated g factors for the Er3+ centers based on the above displacements DeltaZ show good agreement with the observed values. The validity of the results is discussed. (C) 2004 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, dept appl phys, coll phys elect, 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, coll phys elect, chengdu 610054, peoples r china;wushaoyi@netease.com
关键词	Electron Paramagnetic Resonance (Epr) Defects And Impurities Crystal-field And Spin Hamiltonians Er3++ Kmf3 (m = Mg And Zn) Crystal-field Superposition-model Perovskite Kmgf3 Conversion Parameters Fluorides Kznf3
URL	查看原文
WOS记录号	WOS:000225202800019
引用统计	被引频次：1[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/321006/35626
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,W. H. Wei. Investigations of the electron paramagnetic resonance g factors Er3+-V-K for the trigonal ErK centers in KMF3 (M = Mg and Zn)[J]. Journal of Magnetism and Magnetic Materials,2004,283(2-3):270-275.
APA	S. Y. Wu,H. N. Dong,&W. H. Wei.(2004).Investigations of the electron paramagnetic resonance g factors Er3+-V-K for the trigonal ErK centers in KMF3 (M = Mg and Zn).Journal of Magnetism and Magnetic Materials,283(2-3),270-275.
MLA	S. Y. Wu,et al."Investigations of the electron paramagnetic resonance g factors Er3+-V-K for the trigonal ErK centers in KMF3 (M = Mg and Zn)".Journal of Magnetism and Magnetic Materials 283.2-3(2004):270-275.