RAMAN-STUDY OF FERROELECTRIC BISMUTH LAYER-OXIDES ABI(4)TI(4)O(15)

被引：52

作者：

KOJIMA, S ^{[1
]}

IMAIZUMI, R ^{[1
]}

HAMAZAKI, S ^{[1
]}

TAKASHIGE, M ^{[1
]}

机构：

[1] IWAKI MEISEI UNIV,COLL SCI & ENGN,IWAKI,FUKUSHIMA 970,JAPAN

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1995年 / 348卷

关键词：

D O I：

10.1016/0022-2860(95)08583-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The optical phonon modes have been studied by Raman spectroscopy in bismuth layer-structure oxides ABi(4)Ti(4)O(15) (A=Ba,Ca,Pb,Sr). Although the bands higher than 50 cm(-1) reveal no remarkable temperature dependence, the low frequency modes change markedly. As for CaBi4Ti4O15 and SrBi4Ti4O15 the underdamped soft modes were clearly observed. In contrast, in BaBi4Ti4O15 only low-frequency overdamped modes have been observed. In PbBi4Ti4O15 the low-frequency spectra have a complicated structure and the softening of the underdamped modes was not observed clearly.

引用

页码：37 / 40

页数：4

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