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
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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. |
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