The Soft Mode Phase Transition in Bi2Ti4O11

被引：0
|
作者：
邹广田
孟进芳
赵永年
崔启良
李冬妹
机构：
[1] State Key Laboratory of Superhard Materials Institute of Atomic and Molecular Physics
[2] Jilin University.Changchun 130023 PRC
来源：
ChineseScienceBulletin | 1993年 / 11期
关键词：
Raman spectra; soft mode phase transition; free energy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
1 Introduction In 1962, Subbarao’s thermal expansion and the dielectric measurement indicated a phase transition occurring at 250℃ in BiTiO. The conclusion was firstly confirmed by Raman experiment at high temperature. The phase transition is connected with the softening of the mode with temperature. In our previous study, we reported its Raman spectra under high pressure. The experimental results reveal that a pressure-induced phase transition occurs at 3.7 GPa. It has also been found that the intensity, half-width, phase
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页码：895 / 899
页数：5
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