EPR parameters and defect structures of the off-center Ti3+ ion on the Sr2+ site in neutron-irradiated SrTiO3 crystal

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	EPR parameters and defect structures of the off-center Ti3+ ion on the Sr2+ site in neutron-irradiated SrTiO3 crystal
	Z. Yuan; W. Xiao-Xuan; H. Lv; Z. Wen-Chen
	2007
发表期刊	Journal of Physics and Chemistry of Solids
ISSN	0022-3697
卷号	68 期号:9 页码:1652-1655
摘要	The EPR parameters (g factors and hyperfine structure constants A) for the tetragonal Ti3+ center in cubic phase and the rhombic Ti3+ center in tetragonal phase in the neutron-irradiated SrTiO3 crystals are calculated from the third-order perturbation formulas of EPR parameters for d(1) ions. These low-symmetry Ti3+ centers in both phases of SrTiO3 are due to the Ti3+ ion at "off center" on the Sr2+ site. From the calculation, the defect models (including the direction and magnitude of the Ti3+ off-center displacement) of the two Ti3+ centers in SrTiO3 are estimated and the EPR parameters of both Ti3+ centers are reasonably explained on the basis of the defect models. The results are discussed. (C) 2007 Elsevier Ltd. All rights reserved.
部门归属	sichuan univ, dept mat sci, chengdu 610064, peoples r china. civil aviat flying inst china, dept phys, guanghan 618307, peoples r china. zhejiang normal univ, coll math phys & informat engn, jinhua 321004, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wen-chen, z (reprint author), sichuan univ, dept mat sci, chengdu 610064, peoples r china;zhengwcl@163.com
关键词	Oxides Crystal Fields Defects Electron Paramagnetic Resonance Electron-paramagnetic-resonance Temperature-dependence Optical Spectroscopy Center Displacement Impurity Ions Cr3++ Ions Ktao3 Fe3++
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WOS记录号	WOS:000249770000005
引用统计	被引频次：13[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/321006/34013
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Yuan,W. Xiao-Xuan,H. Lv,et al. EPR parameters and defect structures of the off-center Ti3+ ion on the Sr2+ site in neutron-irradiated SrTiO3 crystal[J]. Journal of Physics and Chemistry of Solids,2007,68(9):1652-1655.
APA	Z. Yuan,W. Xiao-Xuan,H. Lv,&Z. Wen-Chen.(2007).EPR parameters and defect structures of the off-center Ti3+ ion on the Sr2+ site in neutron-irradiated SrTiO3 crystal.Journal of Physics and Chemistry of Solids,68(9),1652-1655.
MLA	Z. Yuan,et al."EPR parameters and defect structures of the off-center Ti3+ ion on the Sr2+ site in neutron-irradiated SrTiO3 crystal".Journal of Physics and Chemistry of Solids 68.9(2007):1652-1655.