Theoretical studies of the spin-Hamiltonian parameters and their stress dependences for Ru(3+) and Ir(4+) ions in Y(3)Ga(5)O(12) crystals

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	Theoretical studies of the spin-Hamiltonian parameters and their stress dependences for Ru(3+) and Ir(4+) ions in Y(3)Ga(5)O(12) crystals
	P. Su; L. He; W. C. Zheng
	2009
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	474 期号:1-2 页码:31-33
摘要	The spin-Hamiltonian parameters (g factors g(parallel to), g(perpendicular to) and hyperfine structure constants A(parallel to), A(perpendicular to)) and the stress dependence of g(perpendicular to) for 4d(5) ion Ru(3+) and 5d(5) ion Ir(4+) in Y(3)Ga(5)O(12) (YGG) crystals are calculated from the perturbation formulas related to the low-spin (2)T(2) term subjected to the trigonal symmetry crystal field. The calculated results are in reasonable agreement with the experimental values. Based on the calculations, the signs of hyperfine structure constants are suggested, and the local bonding angles beta (between the metal-ligand bond and C(3) axis) and local angular compressibilities d beta/dP(where P parallel to C(3) axis) are obtained for both systems. It is found that the local angle 6 and local angular compressibility d beta/dP of impurity center are different not only from the corresponding values in the host crystal, but also from impurity to impurity. The results are discussed. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[su ping; he lv; zheng wen-chen] sichuan univ, dept mat sci, chengdu 610064, peoples r china. [he lv] zhejiang normal univ, dept phys, jinhua 321004, peoples r china. [zheng wen-chen] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;zheng, wc (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;zhengwc1@163.com
关键词	Inorganic Compounds Oxide Materials Crystal And ligAnd Fields Point Defect Electron Paramagnetic Resonance Yttrium Gallium Garnet Transition-metal Ions Orthophosphate Mpo4 m Superposition Model Optical-absorption y Crystals Epr Resonance Spectroscopy Pressure
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32298
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. Su,L. He,W. C. Zheng. Theoretical studies of the spin-Hamiltonian parameters and their stress dependences for Ru(3+) and Ir(4+) ions in Y(3)Ga(5)O(12) crystals[J]. Journal of Alloys and Compounds,2009,474(1-2):31-33.
APA	P. Su,L. He,&W. C. Zheng.(2009).Theoretical studies of the spin-Hamiltonian parameters and their stress dependences for Ru(3+) and Ir(4+) ions in Y(3)Ga(5)O(12) crystals.Journal of Alloys and Compounds,474(1-2),31-33.
MLA	P. Su,et al."Theoretical studies of the spin-Hamiltonian parameters and their stress dependences for Ru(3+) and Ir(4+) ions in Y(3)Ga(5)O(12) crystals".Journal of Alloys and Compounds 474.1-2(2009):31-33.