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Nonlinear dielectric spectroscopy in the smectic-A–smectic-Cα*phase transition

Fajar, Andika and Murai, Hidetoshi and Orihara, Hiroshi (2002) Nonlinear dielectric spectroscopy in the smectic-A–smectic-Cα*phase transition. Physical Review E, 65 (4). ISSN 1063-651X

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We performed nonlinear dielectric spectroscopy to study the dynamic properties near the smectic-A-smectic-C(*)(alpha) phase transition point of an antiferroelectric liquid crystal 4-(1-methyl-heptyloxycar- bonyl)phenyl 4-octylcarbonyloxybiphenyl-4-carboxylate (MHPOCBC). A Landau-type theory was developed in order to analyze the experimentally obtained frequency dispersions. From the experimental and theoretical results we successfully obtained the temperature dependence of the relaxation frequency of the soft mode in both the smectic-A and smectic-C(*)(alpha) phases, which gave direct evidence that the transition is brought about by soft mode condensation. Significant features of this transition are also discussed.

Item Type: Article
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Struktur dan Bahan Maju > Teknik Sintesis Bahan Maju
Divisions: Pusat Sains dan Teknologi Bahan Maju
Date Deposited: 01 Dec 2018 11:56
Last Modified: 01 Dec 2018 11:56
URI: http://repo-nkm.batan.go.id/id/eprint/7260

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