Theoretical investigations of the EPR parameters for PbTiO3 : Cr3+ bulks and nanopowders

IMR OpenIR

	Theoretical investigations of the EPR parameters for PbTiO3 : Cr3+ bulks and nanopowders
	S. Y. Wu; X. Y. Gao; H. N. Dong
	2006
发表期刊	Materials Letters
ISSN	0167-577X
卷号	60 期号:11 页码:1319-1322
摘要	The EPR parameters zero-field splitting D, g factors g(ll) and g(-L) for the four centers (C1-C4) in PbTiO3:Cr3+ bulks and nanopowders are theoretically investigated from the perturbation formulas of the EPR parameters for a 3d(3) ion in tetragonally distorted octahedra. Based on the studies, the impurity displacements Delta Z' away from the center of the octahedron are obtained by analyzing the experimental EPR data. The results of the calculated D values in this work are compared with those based oil the superposition model analyses in the previous works. The sign and magnitude of D and the impurity displacements in these centers are discussed. (c) 2005 Elsevier B.V. All rights reserved.
部门归属	univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. chongqing univ post & telecommun, inst appl phys, chongqing 400065, peoples r china. chongqing univ post & telecommun, coll elect engn, chongqing 400065, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china;wushaoyi@netease.com
关键词	Defects Electron Paramagnetic Resonance Crystal Fields Cr3++ Pbtio3 Atomic Screening Constants Phase-transition Ferroelectric Pbtio3 Superposition Model Single-crystals Scf Functions Size Nanocrystals Resonance Cr3++
URL	查看原文
WOS记录号	WOS:000235860500003
引用统计	被引频次：11[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/321006/34577
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wu,X. Y. Gao,H. N. Dong. Theoretical investigations of the EPR parameters for PbTiO3 : Cr3+ bulks and nanopowders[J]. Materials Letters,2006,60(11):1319-1322.
APA	S. Y. Wu,X. Y. Gao,&H. N. Dong.(2006).Theoretical investigations of the EPR parameters for PbTiO3 : Cr3+ bulks and nanopowders.Materials Letters,60(11),1319-1322.
MLA	S. Y. Wu,et al."Theoretical investigations of the EPR parameters for PbTiO3 : Cr3+ bulks and nanopowders".Materials Letters 60.11(2006):1319-1322.