Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7

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	Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7
	W. L. Feng; J. Y. Xue
	2012
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	407 期号:12 页码:2344-2346
摘要	In this work, the complete matrix of optical spectral levels in trigonal symmetry of 3d(2) (3d(8)) ions are established on basis of strong field coupling mechanism by using two spin-orbit coupling parameters model. The contribution of the spin-orbit coupling of ligand to the optical spectra has been included in these formulas. As an application, the optical spectra of Cr4+ in Y2Ti2O7 and Y2Sn2O7 have been studied by the complete diagonalization (energy matrix) method. The covalent effect has been studied and the difficulty about Dq parameter in explanation of optical spectra of Cr-doped Y2Ti2O7 and Y2Sn2O7 is removed. The theoretical results are in good agreement with observed data. (C) 2012 Elsevier B.V. All rights reserved.
部门归属	[feng, wen-lin] chongqing univ technol, dept appl phys, chongqing 400054, peoples r china. [xue, ji-yuan] chongqing univ technol, dept elect informat & automat, chongqing 400054, peoples r china. [feng, wen-lin] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [feng, wen-lin] chongqing key lab time grating sensing & adv test, chongqing 400054, peoples r china.;feng, wl (reprint author), chongqing univ technol, dept appl phys, chongqing 400054, peoples r china.;wenlinfeng@126.com
关键词	Optical Spectra Covalent Effect Two Spin-orbit Coupling Parameters Model Cr4++ Y2ti2o7 And Y2sn2o7 Atomic Screening Constants Tetragonal Distortion Scf Functions Crystal Epr Pyrochlores Parameters Growth Sites
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59944
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. L. Feng,J. Y. Xue. Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7[J]. Physica B-Condensed Matter,2012,407(12):2344-2346.
APA	W. L. Feng,&J. Y. Xue.(2012).Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7.Physica B-Condensed Matter,407(12),2344-2346.
MLA	W. L. Feng,et al."Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7".Physica B-Condensed Matter 407.12(2012):2344-2346.