摘要
采用热力学和细观力学结合的方法,建立了考虑热、力和电影响的细观力学模型,对铁电体极化反转过程中温度对滞回曲线和矫顽场强的影响进行了研究.研究结果表明温度对滞回曲线形状和矫顽场强有显著影响,在四方相范围内,随着温度的升高,铁电体的滞回曲线变窄、变低,矫顽场强不断减小.
This paper carries out the research on the influence of temperature on the process of ferroelectric polarization reversal. A micromechanics model is established based on the micromechanics and thermodynamics combined together including the influence of thermal, mechanical and electric, etc. The results show that the temperature influences the ferroelectric hysteresis and coercive strength direct. With the temperature rising, the hysteresis becomes smaller and the coercive strength becomes lower.
出处
《固体力学学报》
CAS
CSCD
北大核心
2009年第4期341-345,共5页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金项目(10572050)资助
关键词
铁电体
极化反转
温度
矫顽场强
滞回曲线
ferroelectrics, polarization reversal, temperature, coercive strength, hysteresis curve
