POLARIZED RAMAN-SPECTRA OF Y2BACUO5 - NORMAL-MODE ASSIGNMENT FROM SUBSTITUTIONS FOR Y AND BA

被引：13

作者：

ABRASHEV, MV

ILIEV, MN

机构：

[1] Faculty of Physics, Sofia University

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.45.8046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using the micro-Raman-spectroscopy technique, three types of phonon Raman spectra of R2BaCuO5 (R = Y, Ho, Gd) and Y2Ba0.5Sr0.5CuO5 corresponding to the main crystallographic directions were obtained in the range 100-700 cm-1 in both parallel and crossed polarizations. Comparing the line shifts upon cation substitution, the polarization properties of the three types of spectra, and taking into account the particular site environments, all A(g) lines were assigned to definite atomic vibrations.

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页码：8046 / 8051

页数：6

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