DIELECTRIC STUDY OF THE ELECTROCLINIC EFFECT IN THE SMECTIC-A PHASE

Authors
KALMYKOV YP VIJ JK XU H RAPPAPORT A WAND MD
Citation
Yp. Kalmykov et al., DIELECTRIC STUDY OF THE ELECTROCLINIC EFFECT IN THE SMECTIC-A PHASE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 50(3), 1994, pp. 2109-2114
Citations number
17
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
50
Issue
3
Year of publication
1994
Pages
2109 - 2114
Database
ISI
SICI code
1063-651X(1994)50:3<2109:DSOTEE>2.0.ZU;2-P
Abstract
The dielectric properties of a smectic-A liquid crystal in the presenc e of a de bias field are studied in the frequency range 100 Hz-1 MHz. It is shown that near the smectic-A-smectic-C- phase transition the r elaxation frequency and dielectric strength of the soft mode have nonl inear bias field dependencies resulting from an electroclinic coupling between the molecular tilt and the polarization. A simple mean field theory is proposed to explain the experimental results.