Raman active phonons in RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites

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	Raman active phonons in RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites
	W. R. Wang; D. P. Xu; W. H. Su; Z. H. Ding; Y. F. Xue; G. X. Song
	2005
发表期刊	Chinese Physics Letters
ISSN	0256-307X
卷号	22 期号:9 页码:2400-2402
摘要	We examine RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites prepared with the solid-state reaction method by Raman spectroscopy, and report the Raman active phonons in the RCoO3 perovskites crystallized in cubic symmetry for RCoO3 (R=La, Ce, Pr and Nd) and orthorhombic symmetry for RCoO3 (R=Sm, Eu, Gd, and Dy). It is found that the Raman spectra of RCoO3 perovskites are strongly dependent on the ionic radius of the rare earth elements, and the frequency shift of the most intense modes of the orthorhombic samples are correlated with some structural parameters such as Co-O bond distances, ionic radius of the rare earth elements and Jahn-Teller distortion. It is clear that Raman spectroscopy has the advantage of sensitivity to structure distortion and oxygen motion.
部门归属	jilin univ, dept phys, changchun 130023, peoples r china. ne china inst elect power engn, jilin 132012, peoples r china. harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;xu, dp (reprint author), jilin univ, dept phys, changchun 130023, peoples r china;xu_dapeng@sina.com
关键词	Manganites Equilibria Transition Lacoo3
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WOS记录号	WOS:000231816800072
引用统计	被引频次：34[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/321006/35096
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. R. Wang,D. P. Xu,W. H. Su,et al. Raman active phonons in RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites[J]. Chinese Physics Letters,2005,22(9):2400-2402.
APA	W. R. Wang,D. P. Xu,W. H. Su,Z. H. Ding,Y. F. Xue,&G. X. Song.(2005).Raman active phonons in RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites.Chinese Physics Letters,22(9),2400-2402.
MLA	W. R. Wang,et al."Raman active phonons in RCoO3 (R=La, Ce, Pr, Nd, Sm, Eu, Gd, and Dy) perovskites".Chinese Physics Letters 22.9(2005):2400-2402.