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

doi:10.1016/j.matlet.2005.03.052

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	Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3
	Wu, SY ; Dong, HN
通讯作者	Wu, SY(wushaoyi@netease.com)
	2005-09-01
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.
关键词	defects electron paramagnetic resonance (EPR) crystal fields Er3+ KMgF3
DOI	10.1016/j.matlet.2005.03.052
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000230683900007
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/83212
通讯作者	Wu, SY
作者单位	1.Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China 3.Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
推荐引用方式 GB/T 7714	Wu, SY,Dong, HN. 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	Wu, SY,&Dong, HN.(2005).Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3.MATERIALS LETTERS,59(22),2751-2754.
MLA	Wu, SY,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.