Raman scattering and X-ray diffraction study in Cu2GeSe3

Marcano  G; Rincon  C; Marin  GDelgado  GEMora  AJHerrera-Perez  JLMendoza-Alvarez  JGRodriguez  P

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Raman scattering and X-ray diffraction study in Cu2GeSe3

机译：Raman scattering and X-ray diffraction study in Cu2GeSe3

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A combined Study of X-ray diffraction data and micro-Raman scattering of Cu2GeSe3 is presented. From the analysis of the X-ray data it is confirmed that this compound crystallizes in an orthorhombic cell, space group I mm2. From Raman spectra, optical modes are identified and their possible symmetry assignments are suggested. Peaks at 212, 266 and 300 cm(-1), tentatively assigned to B-2 modes, agree well with those reported front infrared reflectivity. The most strong peak at 189 cm(-1) which is only Raman active is assigned to one of the two A(2) modes. Lines at 135, 235 and 254 cm(-1) probably comprises the are attributed to A(1) or B-1 modes. The highest phonon frequency hand, observed at 385 cm(-1) remaining A(2) mode and an overtone from the strong line at 189 cm(-1). (c) 2008 Elsevier Ltd. All rights reserved.

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来源
《Solid State Communications》 |2008年第2期|65-68|共4页
作者
Marcano G; Rincon C; Marin GDelgado GEMora AJHerrera-Perez JLMendoza-Alvarez JGRodriguez P;
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作者单位

Univ Los Andes, Fac Ciencias, Ctr Estudios Semicond, Merida 5101, Venezuela;

Univ Los Andes, Fac Ciencias, Lab Cristallog, Dept Quim, Merida 5101, Venezuela;

IPN, CICATA, Mexico City 11500, DF, MexicoInst Politecn Nacl, CINVESTAV, Dept Fis, Mexico City 07000, DF, Mexico;

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正文语种英语
中图分类固体物理学;
关键词
semiconductors; optical properties; Raman scattering; elastic light scattering; TEMPERATURE-DEPENDENCE; LATTICE-VIBRATIONS; CRYSTAL-STRUCTURE; THIN-FILMS; CUINTE2;

Raman scattering and X-ray diffraction study in Cu2GeSe3

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