Dielectric Behavior in Chiral Smectic Phases of Main-Chain Polyesters

K. Hiraoka Tokyo Institute of Polytechnics, 1583 Iiyama, Atsugi-shi, 243-02, Japan

Y. Sugano Tokyo Institute of Polytechnics, 1583 Iiyama, Atsugi-shi, 243-02, Japan

K. Monzen Tokyo Institute of Polytechnics, 1583 Iiyama, Atsugi-shi, 243-02, Japan

Y. Uematsu Tokyo Institute of Polytechnics, 1583 Iiyama, Atsugi-shi, 243-02, Japan

M. Tokita Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152, Japan

J. Watanabe Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152, Japan

T. Furukawa Science University of Tokyo, Kagurazaka, Shinjuku-ku, Tokyo, 162, Japan

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Abstract

We have investigated the SmA-SmC* phase transition of main-chain polyesters having a mesogenic p,p′-bibenzoate unit by means of the dielectric and electrooptic measurements. In the SmC* phase, a relaxation due to the Goldstone mode was observed at several 10 Hz. In addition, we recognized the other relaxation exhibiting softening behavior around the SmA-SmC* phase transition temperature.

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Dielectric Behavior in Chiral Smectic Phases of Main-Chain Polyesters

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Dielectric Behavior in Chiral Smectic Phases of Main-Chain Polyesters

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