Studies on the local angular distortions around the impurity Co2+ in CdCl2, CdBr2 and PbI2
文献类型：期刊论文
| 作者 | S. Y. Wu ; G. D. Lu ; H. M. Zhang ; J. S. Yao |
| 刊名 | Radiation Effects and Defects in Solids
 |
| 出版日期 | 2007 |
| 卷号 | 162期号:5-6页码:393-399 |
| 关键词 | defect structures electron paramagnetic resonance (EPR) crystal- and ligand-fields Co2+ CdCl2 CdBr2 PbI2 electron-paramagnetic resonance atomic screening constants superposition model scf functions crystals ions parameters chloride spectra mn |
| ISSN号 | 1042-0150 |
| 中文摘要 | The local angular distortions around the impurity Co2+ in CdCl2, CdBr2 and PbI2 are theoretically studied from the perturbation formulas of the electron paramagnetic resonance (EPR) parameters, the g factors g(//) and g(perpendicular to) and the hyperfine structure constants A(//) and A(perpendicular to) for a 3d(7) ion in trigonal symmetry. In these formulas, the contributions from the s-orbitals of the ligands, which were often ignored, are taken into account based on the cluster approach. By analyzing the EPR spectra, we find that the impurity-ligand bonding angles beta related to the C-3 axis in the Co2+ impurity centers are different from the corresponding metal-ligand bonding angles beta(H) in the hosts, characterized by the local angular distortions Delta beta (=beta - beta(H)). The calculated EPR parameters, especially the anisotropies of the g and A factors for the studied systems based on the local angular distortions Delta beta, show reasonable agreement with the observed values. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33915]  |
| 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,G. D. Lu,H. M. Zhang,et al. Studies on the local angular distortions around the impurity Co2+ in CdCl2, CdBr2 and PbI2[J]. Radiation Effects and Defects in Solids,2007,162(5-6):393-399. |
| APA | S. Y. Wu,G. D. Lu,H. M. Zhang,&J. S. Yao.(2007).Studies on the local angular distortions around the impurity Co2+ in CdCl2, CdBr2 and PbI2.Radiation Effects and Defects in Solids,162(5-6),393-399. |
| MLA | S. Y. Wu,et al."Studies on the local angular distortions around the impurity Co2+ in CdCl2, CdBr2 and PbI2".Radiation Effects and Defects in Solids 162.5-6(2007):393-399. |
入库方式： OAI收割
来源：金属研究所
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