Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1812872 | Physica B: Condensed Matter | 2010 | 6 Pages |
Abstract
We present electro-optic and dynamic properties on three homologous of biphenyl benzoate series of ferroelectric liquid crystals (FLCs) exhibiting the chiral smectic C phase (SmC*). The three compounds present high spontaneous polarization and show the SmC*–SmA*–N* phase sequence. Dielectric spectroscopy was used to provide the dynamics and dipolar ordering of the ferroelectric phase. The Goldstone relaxation mode was studied for sample cells on planar geometry without a DC bias voltage. The rotational viscosity corresponding to molecular motions in the SmC* phase was determined from dielectric measurements. The Arrhenius-type behavior of the rotational viscosity was found and the corresponding activation energies were evaluated.
Keywords
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Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
J. Hemine, A. Daoudi, C. Legrand, A. El kaaouachi, A. Nafidi, M. Ismaili, N. Isaert, H.T. Nguyen,