Investigations of the EPR g factors and hyperfine structure constants for two trigonal Co2+ centers in Al2O3 crystals
文献类型：期刊论文
| 作者 | W. C. Zheng ; X. X. Wu ; W. Fang ; Y. Mei |
| 刊名 | Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
 |
| 出版日期 | 2007 |
| 卷号 | 66期号:4-5页码:1295-1299 |
| 关键词 | electron paramagnetic resonance defect structure crystal- and ligand-field theory Co2+ Al2O3 electron-paramagnetic-resonance atomic screening constants optical-absorption scf functions impurities fields sites ions |
| ISSN号 | 1386-1425 |
| 中文摘要 | The EPR g factors g(parallel to), g(perpendicular to) and the hyperfine structure constants A(parallel to), A(perpendicular to) for two trigonal Co2+ centers (i.e. Co2+(I) center at the substitutional site and Co2+(II) center at the interstitial site) in Al2O3 crystals are calculated from the second-order perturbation formulas based on the cluster approach. In these formulas, the contributions to EPR parameters from both the spin-orbit coupling parameter of central 3d(n) ion and that of ligand are included. The calculated results are in reasonable agreement with the observed values. Based on the calculations, the defect structures of both Co2+ centers in Al2O3 crystals are obtained and the negative sign of All for Co2+(I) center is suggested. The results are discussed. (c) 2006 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/321006/34095]  |
| 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,X. X. Wu,W. Fang,et al. Investigations of the EPR g factors and hyperfine structure constants for two trigonal Co2+ centers in Al2O3 crystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2007,66(4-5):1295-1299. |
| APA | W. C. Zheng,X. X. Wu,W. Fang,&Y. Mei.(2007).Investigations of the EPR g factors and hyperfine structure constants for two trigonal Co2+ centers in Al2O3 crystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,66(4-5),1295-1299. |
| MLA | W. C. Zheng,et al."Investigations of the EPR g factors and hyperfine structure constants for two trigonal Co2+ centers in Al2O3 crystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 66.4-5(2007):1295-1299. |
入库方式： OAI收割
来源：金属研究所
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