Raman scattering study of Na0.5Bi4.5Ti4O15 and its solid solutions

被引：53
|
作者：
Liu, JJ [1 ]
Zou, GT [1 ]
Jin, YR [1 ]
机构：
[1] JILIN UNIV,STATE KEY LAB SUPERHARD MAT,CHANGCHUN 130023,PEOPLES R CHINA
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1996年 / 57卷 / 11期
关键词：
Raman spectroscopy; lattice dynamics; phase transition;
D O I：
10.1016/0022-3697(96)00042-X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The Raman spectra of Na0.5Bi4.5Ti4O15 and its solid solutions Na0.5Bi4.5-xLaxTi4O15, Na0.5Bi4.5-xGdxTi4O15 and (NaBi)(0.5(1-x))BaxBi4Ti4O15 were investigated. It was found that a first order phase transition takes place in the systems Na0.5Bi4.5-xLaxTi4O15 and Na0.5Bi4.5-xGdxTi4O15 at room temperature. The microscopic origins of the phase transitions are analysed. On the basis of an internal and external mode analysis, the nature of the various vibrations is discussed.
引用
收藏
页码：1653 / 1658
页数：6
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