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Updated: Feb 12, 2026
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Effect of ferroelectric BaTiO3 particles on the threshold voltage of a smectic A liquid crystal
Abbas Rahim Imamaliyev1, Mahammadali Ahmad Ramazanov2, Shirkhan Arastun Humbatov2
1Institute of Physics of Azerbaijan National Academy of Sciences, H. Javid Ave. 131, AZ1143, Baku, Azerbaijan.
Abstract:
The influence of small ferroelectric BaTiO3 particles on the planar-homeotropic transition threshold voltage in smectic A liquid crystals consisting of p-nitrophenyl p-decyloxybenzoate and 4-cyano-4'-pentylbiphenyl were studied by using capacitance-voltage (C-V) measurements. It was shown that the BaTiO3 particles significantly reduce the threshold voltage. The obtained result is explained by two factors: an increase of dielectric anisotropy of the liquid crystals and the formation of a strong electric field near polarized particles of BaTiO3. It was shown that the role of the second factor is dominant. The explanations of some features observed in the C-V characteristics are given.
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