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Electro-optic switching and dielectric spectroscopy studies of ferroelectric liquid crystals with low and high spontaneous polarization
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SYSNO ASEP 0350503 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Electro-optic switching and dielectric spectroscopy studies of ferroelectric liquid crystals with low and high spontaneous polarization Author(s) Malik, P. (IN)
Raina, K.K. (IN)
Bubnov, Alexej (FZU-D) RID, ORCID, SAI
Choudhary, A. (IN)
Singh, R. (IN)Source Title Thin Solid Films. - : Elsevier - ISSN 0040-6090
Roč. 519, č. 3 (2010), 1052-1055Number of pages 5 s. Language eng - English Country CH - Switzerland Keywords spontaneous polarization ; ferroelectric liquid crystal ; relaxation frequency ; Goldstone mode Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects IAA100100911 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA202/09/0047 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000285075300022 DOI 10.1016/j.tsf.2010.08.042 Annotation Electro-optic and dielectric studies have been carried out on two ferroelectric liquid crystalline materials: namely, the commercial mixture possessing low spontaneous polarization and pure material with high spontaneous polarization on cells with planar alignment. The calculated values of spontaneous polarization, response time and rotational viscosity were found ~ 240nC/cm2, 20nC/cm2, 1600μs, 500μs, 230kg/ms and 19kg/ms for high and low polarization ferroelectric liquid crystalline materials, respectively. For the ferroelectric liquid crystal with high polarization, the effect of temperature, frequency and bias field on the dielectric properties have been studied and the obtained results were compared to those obtained on the ferroelectric liquid crystalline mixture with low spontaneous polarization. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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