EPR parameters and defect structure of paramagnetic Er3+ center in alpha-LiIO3 crystal
文献类型：期刊论文
| 作者 | S. Y. Wu ; W. C. Zheng |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2002 |
| 卷号 | 346期号:1-2页码:41069 |
| 关键词 | rare earth compounds crystal fields electron paramagnetic resonance superposition-model single-crystals generation linbo3 |
| ISSN号 | 0925-8388 |
| 中文摘要 | The EPR parameters (g factors g(parallel to), g(perpendicular to) and hyperfine structure constants A(parallel to), A(perpendicular to)) of paramagnetic Er3+ centers in the alpha-LiIO3 crystal are studied from the perturbation formulas of EPR parameters for 4f(11) ion in trigonal symmetry. In these formulas, besides the first-order perturbation contribution considered in previous papers, the second-order perturbation contribution is taken into account, and the crystal-field parameters are estimated from the structural data of Er3+ centers in alpha-LiIO3:Er3+ by using the superposition model. From the studies, it is found that in the Er3+ center the six O2- ions between the Er3+ ion and Li vacancies (V-Li) are shifted away from the V-Li by about 0.037 Angstrom. The shift direction is in agreement with those of the trivalent iron-group ions Cr3+ and Fe3+ in alpha-LiIO3 as well as with the expectation based on the electrostatic interaction model. The EPR parameters g(parallel to), g(perpendicular to), A(parallel to), and A(perpendicular to), for alpha-LiIO3: Er3+ are also reasonably well explained by considering the local lattice relaxation. (C) 2002 Elsevier Science B.V. All fights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36456]  |
| 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,W. C. Zheng. EPR parameters and defect structure of paramagnetic Er3+ center in alpha-LiIO3 crystal[J]. Journal of Alloys and Compounds,2002,346(1-2):41069. |
| APA | S. Y. Wu,&W. C. Zheng.(2002).EPR parameters and defect structure of paramagnetic Er3+ center in alpha-LiIO3 crystal.Journal of Alloys and Compounds,346(1-2),41069. |
| MLA | S. Y. Wu,et al."EPR parameters and defect structure of paramagnetic Er3+ center in alpha-LiIO3 crystal".Journal of Alloys and Compounds 346.1-2(2002):41069. |
入库方式： OAI收割
来源：金属研究所
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