Investigations of EPR parameters and local lattice distortions for both Co2+ centers in La2Mg3(NO3)(12)center dot 24H(2)O crystal

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	Investigations of EPR parameters and local lattice distortions for both Co2+ centers in La2Mg3(NO3)(12)center dot 24H(2)O crystal
	W. C. Zheng; S. Y. Wu; H. N. Dong
	2004
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
ISSN	1386-1425
卷号	60 期号:3 页码:715-718
摘要	The EPR g factors, g(parallel to) and g(perpendicular to), of Co2+ and hyperfine structure constants (A(parallel to), A(perpendicular to)) of Co-59(2+) and (60)Co2(+) isotopes in both trigonal Mg2+ sites of La2Mg3(NO3)(12).24H(2)O crystal are calculated from the high-order perturbation formulas of EPR parameters based on the cluster approach for 3d(7) ion. It is found that to explain reasonably all these EPR parameters, the local relaxation effects (particularly, those related to the trigonal distortion angles theta(i)) in the vicinity of both Co2+ impurities should be considered. The local angles theta(i) are obtained from the calculations and the results are discussed. (C) 2003 Elsevier B.V. All rights reserved.
部门归属	chongqing univ posts & telecommun, inst appl phys, chongqing 400065, peoples r china. sichuan univ, dept mat sci, chengdu 610064, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china.;dong, hn (reprint author), chongqing univ posts & telecommun, inst appl phys, chongqing 400065, peoples r china
关键词	Electron Paramagnetic Resonance Crystal- And ligAnd-field Theory Local Lattice Distortion Co2++ La2mg3(No3)(12)Center Dot 24h(2)o Electron-paramagnetic-resonance Superposition Model Analysis Atomic Screening Constants Magnesium-nitrate Single-crystals Scf Functions La2mg3(No3)12.24h2o Dependence Spectrum Cobalt
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WOS记录号	WOS:000188890200029
引用统计	被引频次：4[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/321006/35759
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. C. Zheng,S. Y. Wu,H. N. Dong. Investigations of EPR parameters and local lattice distortions for both Co2+ centers in La2Mg3(NO3)(12)center dot 24H(2)O crystal[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2004,60(3):715-718.
APA	W. C. Zheng,S. Y. Wu,&H. N. Dong.(2004).Investigations of EPR parameters and local lattice distortions for both Co2+ centers in La2Mg3(NO3)(12)center dot 24H(2)O crystal.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,60(3),715-718.
MLA	W. C. Zheng,et al."Investigations of EPR parameters and local lattice distortions for both Co2+ centers in La2Mg3(NO3)(12)center dot 24H(2)O crystal".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 60.3(2004):715-718.