Dielectric characteristics of chiral smectic C subphases in liquid crystal MHPOPB

Recently the antiferroelectric liquid crystal compound (MHPOPB), synthesized in the Institute of Chemistry, Military University of Technology (Warsaw), has been studied by means of low frequency dielectric spectroscopy. This compound shows a very broad temperature range of chiral smectic C subphases...

Full description

Saved in:
Bibliographic Details
Published in:Journal of molecular liquids 2006-02, Vol.124 (1), p.7-12
Main Authors: Wojciechowski, M., Gromiec, L.A., Bak, G.W.
Format: Article
Language:English
Subjects:
Dielectric properties
Goldstone mode
SmC subphases
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recently the antiferroelectric liquid crystal compound (MHPOPB), synthesized in the Institute of Chemistry, Military University of Technology (Warsaw), has been studied by means of low frequency dielectric spectroscopy. This compound shows a very broad temperature range of chiral smectic C subphases: the SmC α*, the SmC β*, and the SmC γ* in the cooling process. The dielectric characteristics of these subphases are presented. In the SmC α* phase only a weak Goldstone mode was observed. In the SmC β* phase a relaxation process of characteristic antiferroelectric ordering was observed. In the SmC γ* phase a ferrielectric Goldstone mode was registered. The temperature dependence of parameters describing these modes is also presented.
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2004.12.004