Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN

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	Investigations on the local structure and the EPR parameters for Cu(2+)-doped GaN
	L. H. Wei; S. Y. Wu; Z. H. Zhang; H. Wang; X. F. Wang
	2008
发表期刊	Modern Physics Letters B
ISSN	0217-9849
卷号	22 期号:18 页码:1739-1747
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.
部门归属	[wei, li-hua; wu, shao-yi; zhang, zhi-hong; wang, hui; wang, xue-feng] univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. [wu, shao-yi] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;shaoyiwu@163.com
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++
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33183
专题	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.