EPR investigation of the structure of a rhombic Co2+ center in an NaF crystal

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	EPR investigation of the structure of a rhombic Co2+ center in an NaF crystal
	S. Y. Wu; H. N. Dong
	2003
发表期刊	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
ISSN	0932-0784
卷号	58 期号:5-6 页码:285-289
摘要	The local structure of the rhombic Co2+ center in NaF crystal is investigated by using the perturbation formulas of electron paramagnetic resonance (EPR) g factors g(i) (i - x,y,z) and hyperfine constants A(i) for a 3d(7) (Co2+) ion in rhombic octahedral symmetry based on a cluster approach. In these formulas, the contributions from the admixture among different states, covalency effect as well as rhombic crystal field are included. By studying the EPR data of the rhombic Co2+ center, one can reasonably obtain the local structural (or rhombic distortion) parameters DeltaR(c)(approximate to 0.268 Angstrom) for the central Co2+ and DeltaR(p)(approximate to 0. 181 Angstrom) for the two F- ions along [100] and [010] axes closest to the Na+ vacancy V-Na. The reasonableness of the results is also discussed.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. sichuan normal univ, inst solid state phys, chengdu 610066, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china
关键词	Local Geometry Electron Paramagnetic Resonance (Epr) Crystal- And Ligand Field Theory Naf Co2++ Atomic Screening Constants Superposition Model Scf Functions Parameters Electrons Resonance Ions Cr3++
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WOS记录号	WOS:000184274600004
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36078
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wu,H. N. Dong. EPR investigation of the structure of a rhombic Co2+ center in an NaF crystal[J]. Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,2003,58(5-6):285-289.
APA	S. Y. Wu,&H. N. Dong.(2003).EPR investigation of the structure of a rhombic Co2+ center in an NaF crystal.Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences,58(5-6),285-289.
MLA	S. Y. Wu,et al."EPR investigation of the structure of a rhombic Co2+ center in an NaF crystal".Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences 58.5-6(2003):285-289.