Some properties of Na0.5Bi0.5TiO3

被引：31
|
作者：
Suchanicz, J
Poprawski, R
Matyjasik, S
机构：
[1] WROCLAW TECH UNIV,INST PHYS,PL-50370 WROCLAW,POLAND
[2] INT LAB LOW TEMP & STRONG MAGNET FIELD,WROCLAW,POLAND
来源：
FERROELECTRICS | 1997年 / 192卷 / 1-4期
关键词：
sodium-bismuth titanate; specific heat; spontaneous polarization;
D O I：
10.1080/00150199708216207
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The specific heat of Na0.5Bi0.5TiO3 crystal in the temperature range 300-650 K and the changes of spontaneous polarization of Na0.5Bi0.5TiO3 ceramic in the temperature range 4.2-90 K were measured. The calorimetric measurements showed that the anomaly of specific heat exists in the temperature range where the phase transition rate from the rhomhedral phase to the tetragonal phase is utmost. From low-temperature pyroelectric effect a phonon wave number equal to 128 cm(-1) was found to have the main share in the temperature changes of spontaneous polarization.
引用
收藏
页码：329 / 333
页数：5
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