铁电液晶SmC^＊相介电特性的研究  

Dielectric Properties in SmC~* Ferroelectric Liquid Crystals

作　　者：钱祥忠[1] 

机构地区：[1]淮南工业学院数理系,安徽淮南232001

出　　处：《液晶与显示》2000年第2期85-91,共7页Chinese Journal of Liquid Crystals and Displays

基　　金：安徽省教委自然科学基金!(99JL0191)资助项目

摘　　要：建立了铁电液晶ＳｍＣ*相介电特性的分子理论，求出在外加交变电场作用下液晶系统的自由能密度，得到极化强度〈Ｐ〉和复介电常数ε*的近似表达式。结果表明ε*是外加交变电场的角频率、幅值、温度以及液晶的分子结构参数的函数。The molecular theory of the dielectric properties in SmC* ferroelectric liquid crystals is presented. The free energy density of liquid crystals system at the external alternating electric field is obtained. The approximate formula of polarization P and complex dielectric constant ε* are obtained. It is shown that the ε* is a function of the angular frequency and amplitued of the applied electric field , temperature and molecular structure parameters of liquid crystals.

关 键 词：复介电常数 角频率 铁电液晶 SmC^＊相 

分 类 号：O735.2[理学—晶体学]