Investigations on the local structures of the two trigonal Er3+ centers in KMgF3
文献类型：期刊论文
| 作者 | S. Y. Wu ; H. N. Dong ; W. H. Wei |
| 刊名 | Physica Status Solidi B-Basic Research
 |
| 出版日期 | 2004 |
| 卷号 | 241期号:15页码:3505-3511 |
| 关键词 | electron-paramagnetic-resonance superposition-model analysis crystal-field perovskite kmgf3 single-crystals epr parameters transitions impurities complex ions |
| ISSN号 | 0370-1972 |
| 中文摘要 | The local structures of the two trigonal Er3+ (Er-167) centers I and II in KMgF3 are theoretically studied using the perturbation formulas of the g factors for a 4f(II) ion in trigonal symmetry. In these formulas the contributions to the g factors from the second-order perturbation terms and admixtures of various states are taken into account. Based on the studies, the centers I and II are attributed to, respectively, the Er3+ impurity occupying the octahedral Mg2+ site with a K+ vacancy V-K and the dodecahedral K+ site with a Mg2+ vacancy V-Mg along the C-3 axis due to charge compensation. According to the calculations. the Er3+ ion in either center is found to undergo an axial displacement DeltaZ(L) (L = I or II) towards the compensator (V-K or V-Mg) along the C-3 axis-because of electrostatic attraction. The calculated g factors for both the Er3+ centers based on the displacements DeltaZ(L) show reasonable agreement with the observed values. The local structures of the two centers are discussed. The theoretical studies in this paper may be useful for understanding the optical properties of Er3+-doped KMgF3. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35627]  |
| 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,W. H. Wei. Investigations on the local structures of the two trigonal Er3+ centers in KMgF3[J]. Physica Status Solidi B-Basic Research,2004,241(15):3505-3511. |
| APA | S. Y. Wu,H. N. Dong,&W. H. Wei.(2004).Investigations on the local structures of the two trigonal Er3+ centers in KMgF3.Physica Status Solidi B-Basic Research,241(15),3505-3511. |
| MLA | S. Y. Wu,et al."Investigations on the local structures of the two trigonal Er3+ centers in KMgF3".Physica Status Solidi B-Basic Research 241.15(2004):3505-3511. |
入库方式： OAI收割
来源：金属研究所
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