Investigations of the local lattice distortions and the EPR parameters for the orthorhombic Pt(3+) center in YAG

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	Investigations of the local lattice distortions and the EPR parameters for the orthorhombic Pt(3+) center in YAG
	Y. X. Hu; S. Y. Wu; X. F. Wang; P. Xu
	2010
发表期刊	European Physical Journal D
ISSN	1434-6060
卷号	58 期号:3 页码:281-285
摘要	The local lattice distortions and the EPR parameters (anisotropic g factors and the hyperfine structure constants) for the orthorhombic Pt(3+) center in YAG are theoretically investigated from the perturbation formulas of these parameters for a 5d(7) ion in an orthorhombically elongated octahedron. The [ PtO(6)] (9-) cluster on Al(3+) site is found to experience the axial elongation of about 0.01 along Z axis, and the planar impurity-ligand bond lengths suffer the relative variation of about 0.11 along X and Y axes due to the Jahn-Teller effect. As a result, the above local lattice distortions produce significant orthorhombic deformation, whereas the original slight trigonal distortion of the host [ AlO(6)] (9-) octahedron is entirely depressed by the Jahn-Teller effect. The calculated EPR parameters based on the above lattice distortions show good agreement with the experimental data, and the local structure of the impurity center is also discussed.
部门归属	[hu, y. x.; wu, s. y.; wang, x. f.; xu, p.] univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. [wu, s. y.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;hu, yx (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;shaoyi_wu@163.com
关键词	Yttrium-aluminum-garnet Spin-hamiltonian Parameters Atomic Screening Constants Paramagnetic-resonance Superposition Model Scf Functions Y3al5o12 Spectrum Crystals
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31165
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. X. Hu,S. Y. Wu,X. F. Wang,et al. Investigations of the local lattice distortions and the EPR parameters for the orthorhombic Pt(3+) center in YAG[J]. European Physical Journal D,2010,58(3):281-285.
APA	Y. X. Hu,S. Y. Wu,X. F. Wang,&P. Xu.(2010).Investigations of the local lattice distortions and the EPR parameters for the orthorhombic Pt(3+) center in YAG.European Physical Journal D,58(3),281-285.
MLA	Y. X. Hu,et al."Investigations of the local lattice distortions and the EPR parameters for the orthorhombic Pt(3+) center in YAG".European Physical Journal D 58.3(2010):281-285.