Theoretical investigations of the EPR g factors and the local structure for Er3+ in BaWO4

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	Theoretical investigations of the EPR g factors and the local structure for Er3+ in BaWO4
	S. Y. Wu ; H. N. Dong
刊名	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
	2004
卷号	60 期号:8-9 页码:1991-1994
关键词	electron paramagnetic resonance (EPR) crystal-field theory and spin Hamiltonians local structure Er3+ BaWO4 electron-paramagnetic-resonance superposition-model phase-transition crystal parameters ion transformation tungstate yb3
ISSN号	1386-1425
中文摘要	The electron paramagnetic resonance (EPR) parameters g factors g(\|\|) and g(perpendicular to) as the local structure for Er3+ in scheelite-type BaWO4 are theoretically investigated by using the perturbation formulas of the EPR parameters for a 4f(11) ion under tetragonal symmetry. In these formulas, the contributions to the EPR parameters arising from the second-order perturbation terms and the admixture of different states are included. It is found that the impurity-ligand bonding angles (or the polar angles) related to the fourfold axis in the tetragonal Er3+ center are about 1.5degrees smaller than those in pure crystal. The calculated EPR parameters are in agreement with the observed values. The validity of the results is discussed. (C) 2003 Elsevier B.V. All rights reserved.
原文出处	://WOS:000223116400038
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35622]
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. Theoretical investigations of the EPR g factors and the local structure for Er3+ in BaWO4[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2004,60(8-9):1991-1994.
APA	S. Y. Wu,&H. N. Dong.(2004).Theoretical investigations of the EPR g factors and the local structure for Er3+ in BaWO4.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,60(8-9),1991-1994.
MLA	S. Y. Wu,et al."Theoretical investigations of the EPR g factors and the local structure for Er3+ in BaWO4".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 60.8-9(2004):1991-1994.