Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)

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	Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)
	Z. Cai-Xia; K. Xiao-Yu; M. Ai-Jie; W. Hui
	2008
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	403 期号:18 页码:3114-3118
摘要	On the basis of the 120 x 120 complete energy matrices for a d(3) configuration ion in a trigonal ligand field, for Cr(3+) ions doped in MgTiO(3) and LiTaO(3), the local structures and EPR g factors of the octahedral (CrO(6))(9-) clusters have been studied, respectively. By simulating the calculated optical spectra and the EPR spectra data to the experimental results, local structure parameters are obtained. The calculated results show that although the local lattice structures around the M (M = Mg(2+), Ta(5+)) ions are obviously different, after Cr(3+) replacing the M, the local lattice structures around the Cr(3+) ions are quite similar and close to those of the Cr(2)O(3). This may be ascribed to the fact that the octahedral Cr(3+) center in MgTiO(3):Cr(3+) and LiTaO(3):Cr(3+) systems and that in Cr(2)O(3) exhibit similar octahedral (CrO(6))(9-) clusters. Moreover, the corresponding theoretical values of the optical spectra have been reported. It is also found that the orbital reduction factor k is very important to understand the EPR g factors for Cr(3+) ions doped in MgTiO(3) and LiTaO(3). (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[cai-xia, zhang; xiao-yu, kuang; ai-jie, mao; hui, wang] sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china. [xiao-yu, kuang] acad sinica, int ctr mat phys, shenyang 110016, peoples r china.;xiao-yu, k (reprint author), sichuan univ, inst atom & mol phys, chengdu 610065, peoples r china;zhangcaixiaml@163.com scu_kxy@163.com
关键词	(Cro(6))(9-)Clusters Local Structures Epr g Factors Epr And Optical Spectra Orbit Reduction Factor k Mechanical Activation X-ray Crystals Parameters Centers Temperature Diffraction Titanate Powders Ruby
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WOS记录号	WOS:000259626500026
引用统计	被引频次：3[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/321006/32653
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Cai-Xia,K. Xiao-Yu,M. Ai-Jie,et al. Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)[J]. Physica B-Condensed Matter,2008,403(18):3114-3118.
APA	Z. Cai-Xia,K. Xiao-Yu,M. Ai-Jie,&W. Hui.(2008).Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3).Physica B-Condensed Matter,403(18),3114-3118.
MLA	Z. Cai-Xia,et al."Optical spectrum, local lattice structure and EPR g factors for Cr(3+) impurity ions in MgTiO(3) and LiTaO(3)".Physica B-Condensed Matter 403.18(2008):3114-3118.