Theoretical investigations of the g factors and the local structures for the orthorhombic Nd3+ centers in the garnets

doi:10.1016/j.jallcom.2004.09.067

IMR OpenIR

	Theoretical investigations of the g factors and the local structures for the orthorhombic Nd3+ centers in the garnets
	Wu, SY ; Dong, HN
通讯作者	Wu, SY(wushaoyi@netease.com)
	2005-05-03
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	393 期号:1-2 页码:46-50
摘要	The EPR g factors g(x), g(y) and g(z) and the local structures for the orthorhombic Nd3+ centers in YAG, YGG and LuGG garnets are studied by using the perturbation formulas of the g factors for a 43 ion in orthorhombic symmetry. In these formulas, the contributions to the g factors arising from the second-order perturbation terms and the admixture of various energy levels are considered. Based on the analyses of the g factors, we find that the polar angles theta'(j) of the impurity-ligand bonds related to the Z-axis of the crystals in these Nd3+ centers are smaller than the host angles theta(j) in pure crystals, whereas the azimuthal angles phi'(j) related to the X-axis in the impurity centers are larger than the corresponding phi(j) in the hosts. The calculated g factors, particularly their anisotropies Delta g [= g(z) - (g(x) + g(y))/2] and delta g (= g(x) - g(y)) for Nd3+ in the gamets based on the above local angles show reasonable agreement with the observed values. (c) 2004 Elsevier B.V. All rights reserved.
关键词	electron paramagnetic resonance (EPR) defect structure crystal-field and spin hamiltonians Nd3+ garnets
DOI	10.1016/j.jallcom.2004.09.067
收录类别	SCI
语种	英语
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000228716700010
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81999
通讯作者	Wu, SY
作者单位	1.Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China 3.Chongqing Univ Posts & Telecommun, Coll Elect Engn, Chongqing 400065, Peoples R China
推荐引用方式 GB/T 7714	Wu, SY,Dong, HN. Theoretical investigations of the g factors and the local structures for the orthorhombic Nd3+ centers in the garnets[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2005,393(1-2):46-50.
APA	Wu, SY,&Dong, HN.(2005).Theoretical investigations of the g factors and the local structures for the orthorhombic Nd3+ centers in the garnets.JOURNAL OF ALLOYS AND COMPOUNDS,393(1-2),46-50.
MLA	Wu, SY,et al."Theoretical investigations of the g factors and the local structures for the orthorhombic Nd3+ centers in the garnets".JOURNAL OF ALLOYS AND COMPOUNDS 393.1-2(2005):46-50.