Dielectric study of the electroclinic effect in the smectic-Aphase
- 1 September 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 50 (3), 2109-2114
- https://doi.org/10.1103/physreve.50.2109
Abstract
The dielectric properties of a smectic-A liquid crystal in the presence of a dc bias field are studied in the frequency range 100 Hz–1 MHz. It is shown that near the smectic-A–smectic- phase transition the relaxation frequency and dielectric strength of the soft mode have nonlinear 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.
Keywords
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