EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals
文献类型：期刊论文
| 作者 | M. Yang ; W. Xiao-Xuan ; Z. Wen-Chen |
| 刊名 | Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
 |
| 出版日期 | 2008 |
| 卷号 | 71期号:2页码:714-719 |
| 关键词 | Electron paramagnetic resonance Defect structure Crystal- and ligand-field theory Co2+ LiNbO3 LiTaO3 electron-paramagnetic-resonance atomic screening constants lithium-niobate optical-spectra scf functions lattice oscillator impurity |
| ISSN号 | 1386-1425 |
| 中文摘要 | The electron paramagnetic resonance (EPR) parameters (g factors g parallel to, g perpendicular to and hyperfine structure constants A parallel to, A perpendicular to) for Co2+ ions in LiNbO3 and LiTaO3 crystals are calculated from the second-order perturbation formulas based on the cluster approach for 3d(7) ions in trigonal octahedral clusters. The calculated results are in reasonable agreement with the experimental values. From the calculations, the negative sign of All for Co2+, in the two crystals and the more exact and rational values of A parallel to for Co2+ in LiTaO3 are suggested. The defect structures (characterized by the Co2+ displacement Delta Z along C-3 axis and the O2- displacement Delta X in an oxygen triangle towards the center of the triangle) for the Co2+ centers in both crystals are estimated. The results are discussed. (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/321006/33274]  |
| 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 | M. Yang,W. Xiao-Xuan,Z. Wen-Chen. EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2008,71(2):714-719. |
| APA | M. Yang,W. Xiao-Xuan,&Z. Wen-Chen.(2008).EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,71(2),714-719. |
| MLA | M. Yang,et al."EPR parameters and defect structures for the Co2+ ions in LiNbO3 and LiTaO3 crystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 71.2(2008):714-719. |
入库方式： OAI收割
来源：金属研究所
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