Defect structure of Co2+ center in rhombohedral BaTiO3
文献类型：期刊论文
| 作者 | W. C. Zheng ; Y. Mei ; X. X. Wu ; Q. Zhou |
| 刊名 | Optical Materials
 |
| 出版日期 | 2007 |
| 卷号 | 29期号:6页码:714-717 |
| 关键词 | defect structure electron paramagnetic resonance crystal and ligand field photorefractive material Co2+ BaTiO3 electron-paramagnetic-resonance atomic screening constants photorefractive properties superposition model scf functions dependence position distance fields sites |
| ISSN号 | 0925-3467 |
| 中文摘要 | The spin-Hamiltonian parameters (g factor g(parallel to), gi(perpendicular to) and hyperfine structure constants A(parallel to), A(perpendicular to)) of Co2+ ion in rhombohedral BaTiO3 crystal are calculated from the perturbation formulas based on the cluster approach for the spin-Hamiltonian parameters of 3d(7) ion in trigonal octahedral site. The calculations are related to the trigonal field parameters and hence to the defect structure of Co2+ center. From the calculations, it is found that in order to reach a good fit between calculations and experiments, the off-center displacement of Co2+ ion in oxygen octahedron of BaTiO3 is much smaller than that of the host Ti4+ ion it replaces. This point is similar to the case of Fe3+ ion in BaTiO3 obtained in the previous studies by analyzing EPR zero-field splitting from the superposition model. (c) 2005 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34090]  |
| 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 | W. C. Zheng,Y. Mei,X. X. Wu,et al. Defect structure of Co2+ center in rhombohedral BaTiO3[J]. Optical Materials,2007,29(6):714-717. |
| APA | W. C. Zheng,Y. Mei,X. X. Wu,&Q. Zhou.(2007).Defect structure of Co2+ center in rhombohedral BaTiO3.Optical Materials,29(6),714-717. |
| MLA | W. C. Zheng,et al."Defect structure of Co2+ center in rhombohedral BaTiO3".Optical Materials 29.6(2007):714-717. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。