COUPLED ACOUSTIC MODES IN TETRAGONAL BATIO3 - TEMPERATURE-DEPENDENCE

被引：5
作者：
ISHIDATE, T
NIWA, K
机构：
[1] Department of Physics, Faculty of Science, Shizuoka University, Ohya
来源：
FERROELECTRICS | 1992年 / 137卷 / 1-4期
关键词：
BATIO3; BRILLOUIN SCATTERING; COUPLED ACOUSTIC PHONON; PHOTOELASTIC CONSTANT; PIEZOELECTRIC EQUATION;
D O I：
10.1080/00150199208015935
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The acoustic velocities in BaTiO3 were measured as a function of temperature up to 350-degrees-C by means of Brillouin scattering. The behavior of the transverse acoustic phonons propagating along [001], so called coupled phonon, in tetragonal BaTiO3 was discussed in relation to that of the spontaneous polarization on the basis of the piezoelectric equation. The scattering intensity of the coupled phonon mode is related to an effective photoelastic constant including the electro-optic coefficient through the piezoelectric interaction.
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页码：39 / 44
页数：6
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