DIELECTRIC-RELAXATION STUDY IN A GLASSY LOW-MOLECULAR-WEIGHT FERROELECTRIC LIQUID-CRYSTAL

Authors
GONZALEZ Y PALACIOS B JUBINDO MAP DELAFUENTE MR SERRANO JL
Citation
Y. Gonzalez et al., DIELECTRIC-RELAXATION STUDY IN A GLASSY LOW-MOLECULAR-WEIGHT FERROELECTRIC LIQUID-CRYSTAL, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(6), 1995, pp. 5764-5767
Citations number
24
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
52
Issue
6
Year of publication
1995
Part
A
Pages
5764 - 5767
Database
ISI
SICI code
1063-651X(1995)52:6<5764:DSIAGL>2.0.ZU;2-L
Abstract
The dynamics of a low-molecular-weight ferroelectric liquid crystal th at can be frozen into a glassy state has been studied by means of broa dband dielectric spectroscopy covering a wide time scale range from 10 (-10) s to 10(1) s. The temperature dependence of the relaxation frequ ency of the process related to rotations around the molecular long axi s follows the Vogel-Fulcher-Tammann law. The frequency of the Goldston e mode, related to azimuthal fluctuations of the director, also shows this unusual behavior. The results are discussed in the framework of d ifferent theoretical approaches to the glass transition.