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Spontaneous polarization parallel to the tilt plane in the antiferroelectric chiral smectic-CA phase of liquid crystals as observed by polarized infrared spectroscopy

Kouichi Miyachi, Jin Matsushima, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe, and Atsuo Fukuda
Phys. Rev. E 52, R2153(R) – Published 1 September 1995
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Abstract

We have observed the absorbance vs polarizer rotation angle for the carbonyl and phenyl ring stretching peaks in an antiferroelectric liquid crystal, 4-(1-methylheptyloxycarbonyl)phenyl 4′-octyloxybiphenyl-4- carboxylate (MHPOBC), and found that the carbonyl group near the chiral center rather lies on the tilt plane in antiferroelectric Sm-CA* while it takes a considerably upright position in ferroelectric Sm-C*. The spontaneous polarization exists at smectic layer boundaries and its importance to stabilize Sm-CA* has been discussed.

  • Received 19 June 1995

DOI:https://doi.org/10.1103/PhysRevE.52.R2153

©1995 American Physical Society

Authors & Affiliations

Kouichi Miyachi, Jin Matsushima, Yoichi Takanishi, Ken Ishikawa, Hideo Takezoe, and Atsuo Fukuda

  • Tokyo Institute of Technology, Department of Organic and Polymeric Materials, O-okayama, Meguro-ku, Tokyo 152, Japan

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Vol. 52, Iss. 3 — September 1995

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