Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN
文献类型：期刊论文
| 作者 | L. H. Wei ; S. Y. Wu ; Z. H. Zhang ; H. Wang ; X. F. Wang |
| 刊名 | Modern Physics Letters B
 |
| 出版日期 | 2008 |
| 卷号 | 22期号:18页码:1739-1747 |
| 关键词 | electron paramagnetic resonance defect structures crystal-fields and spin Hamiltonians Cu(2+) GaN electron-paramagnetic-resonance atomic screening constants defect structures scf functions doped gan transition crystals ions impurities fe3+ |
| ISSN号 | 0217-9849 |
| 中文摘要 | The local structure and the EPR parameters (g factors and the hyperfine structure constants) for Cu(2+) in GaN are theoretically studied from the perturbation formulas of these parameters for a 3d(9) ion in trigonally distorted tetrahedra. In these formulas, the ligand orbital and spin-orbit coupling contributions are taken into account from the cluster approach, in view of the strong covalency effect of the system. Based on the studies, the impurity Cu(2+) is found not to occupy exactly the host Ga3+ site but to suffer a slight displacement (approximate to 0.004 angstrom) towards the ligand triangle along C(3) axis due to charge and size mismatching substitution. The theoretical EPR parameters show good agreement with the experimental data. The validity of the impurity displacement is also discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33183]  |
| 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 | L. H. Wei,S. Y. Wu,Z. H. Zhang,et al. Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN[J]. Modern Physics Letters B,2008,22(18):1739-1747. |
| APA | L. H. Wei,S. Y. Wu,Z. H. Zhang,H. Wang,&X. F. Wang.(2008).Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN.Modern Physics Letters B,22(18),1739-1747. |
| MLA | L. H. Wei,et al."Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN".Modern Physics Letters B 22.18(2008):1739-1747. |
入库方式： OAI收割
来源：金属研究所
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