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
刊名	Zeitschrift Fur Naturforschung Section a-a Journal of Physical Sciences
	2003
卷号	58 期号:5-6 页码:285-289
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+
ISSN号	0932-0784
中文摘要	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.
原文出处	://WOS:000184274600004
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/36078]
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	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.