Investigations on the local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12

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	Investigations on the local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12
	S. Y. Wu; H. N. Dong
	2006
发表期刊	Optical Materials
ISSN	0925-3467
卷号	28 期号:8-9 页码:1095-1100
摘要	The local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12 (BGO) are theoretically studied by using the perturbation formulas of the EPR parameters for a 3d(3) or 4f(3) ion in trigonally-distorted octahedra. Based on the studies, we find that the impurity Cr3+ does not occupy exactly the host Bi3+ site but undergoes an off-center displacement Delta Z(Cr) (approximate to 0.17 angstrom) towards the center of the oxygen octahedron along the C-3 axis, whereas the Nd3+ suffers another outward shift Delta Z(Nd) (approximate to -0.08 angstrom) away from the center of the octahedron. The calculated EPR parameters based on the above displacements show reasonable agreement with the observed values. (C) 2005 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, coll phys elect, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. chongqing univ posts & telecommun, coll elect engn, chongqing 400065, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, coll phys elect, dept appl phys, chengdu 610054, peoples r china, peoples r china;wushaoyi@netease.com
关键词	Defect Structures Electron Paramagnetic Resonance (Epr) Cr3++ Nd3++ Bi4ge3o12 Electron-paramagnetic-res Superposition-model Crystal-field Theoretical Investigations Spectroscopic Properties Stimulated-emission Growth Spectra Parameters Covalency
URL	查看原文
WOS记录号	WOS:000237871200037
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34573
专题	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. Investigations on the local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12[J]. Optical Materials,2006,28(8-9):1095-1100.
APA	S. Y. Wu,&H. N. Dong.(2006).Investigations on the local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12.Optical Materials,28(8-9),1095-1100.
MLA	S. Y. Wu,et al."Investigations on the local structures of Cr3+(3d(3)) and Nd3+(4f(3)) ions at the trigonal Bi3+ sites in Bi4Ge3O12".Optical Materials 28.8-9(2006):1095-1100.