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Macroscopic Description of Ferroelectric Chiral Smectic C* Liquid Crystals

  • B. Zeks
  • T. Carlsson
  • C. Filipic
  • A. Levstik
Part of the NATO ASI Series book series (NSSB, volume 166)

Abstract

The generalized Landau model is reviewed, which describes thermodynamic behavior of ferrolectric chiral smectic C* liquid crystals. Polarization and tilt temperature dependences are studied. For small biquadratic tilt-polarization coupling as compared to the bilinear one, the dependences deviate only slightly from the classic square root behavior, while for large biquadratic coupling both tilt and polarization develop S-shape behavior. The most convenient way to analyze the data is to study the tilt-polarization relation. In dimensionless form this nonlinear dependence is determined by a single parameter. The model is extended to allow for the polarization sign reversal, which has been observed for some systems recently.

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Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • B. Zeks
    • 1
    • 2
  • T. Carlsson
    • 3
  • C. Filipic
    • 1
  • A. Levstik
    • 1
  1. 1.Institute of Biophysics, Medical FacultyUniversity of LjubljanaLjubljanaYugoslavia
  2. 2.J. Stefan InstituteUniversity of LjubljanaLjubljanaYugoslavia
  3. 3.Institute of Theoretical PhysicsChalmers University of TechnologyGoteborgSweden

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