手性化合物S811的强热释效应及反铁电特性  

Large Pyroelectric Effect and Anti-ferroelectric Properties of Chiral Compound S811

作　　者：牛小玲[1,2] 刘卫国[2] 刘鹏[3] 

机构地区：[1]陕西师范大学化学与材料科学学院,西安710062 [2]西安工业大学材料与化工学院,西安710032 [3]陕西师范大学物理与信息技术学院,西安710062

出　　处：《材料导报》2011年第2期17-19,共3页Materials Reports

基　　金：国家自然科学基金资助项目(50872078)

摘　　要：用热释电流谱、介电温谱、电滞回线谱、差示扫描量热仪(DSC)、热台偏光显微镜(PLM)对手性化合物S811的电学性能及相变行为进行了研究。热释电流谱、介电温谱显示S811在相变附近具有强热释电电流,其最大热释电系数达到384nC/(cm2.K),介电常数在相变过程也发生了突变。电滞回线谱显示,在冷却过程依次出现了反铁电体-铁电体转变的双电滞回线和单电滞回线,揭示了S811作为热释电探测材料的应用潜力,拓展了其应用范围。The electrical properties and phase transition behaviors of chiral compound S811 have been investiga- ted by pyroelectric, dielectric, polarization spectroscopy, I3SC and PLM at different temperatures. It is found that SK11 appeared a large pyroelectric current peak and a sharp growth of dielectric constants near the phase transition temperature. The maximum value of the pyroelectric coefficient p obtained is 384nC/（cm2 ·K）. In the cooling process, the sample presented the transition of anti-ferroelectric to ferroelectric phase. The outstanding pyroelectric performances of S811 make it possible as a novel pyroelectric detectors.

关 键 词：手性化合物S811 热释电效应 介电常数 反铁电 

分 类 号：TB333.03[一般工业技术—材料科学与工程]