HIGH-FREQUENCY DIELECTRIC-RELAXATION OF A FERROELECTRIC LIQUID-CRYSTAL

被引：3

作者：

KRESSE, H ^{[1
]}

TSCHIERSKE, C ^{[1
]}

JOACHIMI, D ^{[1
]}

KREMER, F ^{[1
]}

VALLERIEN, S ^{[1
]}

机构：

[1] MAX PLANCK INST POLYMER RES,W-6500 MAINZ,GERMANY

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 1991年 / 26卷 / 02期

关键词：

D O I：

10.1002/crat.2170260220

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Dielectric relaxation measurements on a optically active thiadiazole derivative in the frequency range from 1 MHz to 1 GHz gave relaxation frequencies between 100 MHz and 1 GHz in the smectic C* phase. This relaxation which is related to molecular reorientation processes around the long molecular axis is connected with a mean activation energy of 57 kJmol-1. A simple model of the energetic behaviour of this reorientation including the production of the spontaneous polarization is discussed.

引用

页码：245 / 250

页数：6

共 17 条

[1]

Beresnev L. A., 1988, MOL CRYST LIQ CRYS A, V158, P1

[2] EFFECT OF MOLECULAR ROTATIONAL HINDRANCE ON THE SPONTANEOUS POLARIZATION IN THE S-STAR-C PHASE OF A FERROELECTRIC LIQUID-CRYSTAL [J].