Spin Hamiltonian parameters and defect structure for the X-ray-induced NbLi4+ center in LiNbO3 crystal

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	Spin Hamiltonian parameters and defect structure for the X-ray-induced NbLi4+ center in LiNbO3 crystal
	W. C. Zheng ; F. Wang ; H. Lv ; M. Yang
刊名	Journal of Alloys and Compounds
	2008
卷号	453 期号:1-2 页码:32-35
关键词	ferroelectrics inorganic compounds crystal and ligand fields point defect electron paramagnetic resonance (EPR) temperature-dependence lithium-niobate epr parameters cr3+ centers endor ions ruby
ISSN号	0925-8388
中文摘要	The spin Hamiltonian (SH) parameters (g factors g(x), g(y), g(z) and hyperfine structure constants A(x), A(y), A(z)) of the low-symmetry Nb-Li(4+) antisite defect center in the X-ray-irradiated congruent undoped LiNbO3 crystal are calculated from the high-order perturbation formulas of SH parameters for d(1) ions. The calculated results are in reasonable agreement with the experimental values. Some information related to the defect structure of the Nb-Li(4+) center (characterized mainly by the Nb-Li(4+) displacement Delta z from the ideal Li+ site along C-3 axis and the displacement Delta x of O2- ions in the oxygen triangle between Nb-Li(4+) and Nb-Nb(5+)) is obtained from the calculations. These displacements are consistent with the expectation based on the electrostatic interaction and electron cloud overlap. The results are discussed. (C) 2006 Elsevier B.V. All rights reserved.
原文出处	://WOS:000254899700009
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33383]
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	W. C. Zheng,F. Wang,H. Lv,et al. Spin Hamiltonian parameters and defect structure for the X-ray-induced NbLi4+ center in LiNbO3 crystal[J]. Journal of Alloys and Compounds,2008,453(1-2):32-35.
APA	W. C. Zheng,F. Wang,H. Lv,&M. Yang.(2008).Spin Hamiltonian parameters and defect structure for the X-ray-induced NbLi4+ center in LiNbO3 crystal.Journal of Alloys and Compounds,453(1-2),32-35.
MLA	W. C. Zheng,et al."Spin Hamiltonian parameters and defect structure for the X-ray-induced NbLi4+ center in LiNbO3 crystal".Journal of Alloys and Compounds 453.1-2(2008):32-35.