Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)
文献类型：期刊论文
| 作者 | Z. Cai-Xia ; K. Xiao-Yu ; M. Ai-Jie ; W. Hui |
| 刊名 | Physica B-Condensed Matter
 |
| 出版日期 | 2008 |
| 卷号 | 403期号:18页码:3114-3118 |
| 关键词 | (CrO(6))(9-)clusters local structures EPR g factors EPR and optical spectra orbit reduction factor k mechanical activation x-ray crystals parameters centers temperature diffraction titanate powders ruby |
| ISSN号 | 0921-4526 |
| 中文摘要 | On the basis of the 120 x 120 complete energy matrices for a d(3) configuration ion in a trigonal ligand field, for Cr(3+) ions doped in MgTiO(3) and LiTaO(3), the local structures and EPR g factors of the octahedral (CrO(6))(9-) clusters have been studied, respectively. By simulating the calculated optical spectra and the EPR spectra data to the experimental results, local structure parameters are obtained. The calculated results show that although the local lattice structures around the M (M = Mg(2+), Ta(5+)) ions are obviously different, after Cr(3+) replacing the M, the local lattice structures around the Cr(3+) ions are quite similar and close to those of the Cr(2)O(3). This may be ascribed to the fact that the octahedral Cr(3+) center in MgTiO(3):Cr(3+) and LiTaO(3):Cr(3+) systems and that in Cr(2)O(3) exhibit similar octahedral (CrO(6))(9-) clusters. Moreover, the corresponding theoretical values of the optical spectra have been reported. It is also found that the orbital reduction factor k is very important to understand the EPR g factors for Cr(3+) ions doped in MgTiO(3) and LiTaO(3). (C) 2008 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32653]  |
| 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 | Z. Cai-Xia,K. Xiao-Yu,M. Ai-Jie,et al. Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)[J]. Physica B-Condensed Matter,2008,403(18):3114-3118. |
| APA | Z. Cai-Xia,K. Xiao-Yu,M. Ai-Jie,&W. Hui.(2008).Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3).Physica B-Condensed Matter,403(18),3114-3118. |
| MLA | Z. Cai-Xia,et al."Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)".Physica B-Condensed Matter 403.18(2008):3114-3118. |
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。