Investigations of the local structure and the g factors for the tetragonal Er3+ center in KMgF3
文献类型：期刊论文
| 作者 | S. Y. Wu ; H. N. Dong |
| 刊名 | Materials Letters
 |
| 出版日期 | 2005 |
| 卷号 | 59期号:22页码:2751-2754 |
| 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 |
| ISSN号 | 0167-577X |
| 中文摘要 | 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. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35120]  |
| 专题 | 金属研究所_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. |
入库方式： OAI收割
来源：金属研究所
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