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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© 1987 Plenum Press, New York
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Zeks, B., Carlsson, T., Filipic, C., Levstik, A. (1987). Macroscopic Description of Ferroelectric Chiral Smectic C* Liquid Crystals. In: Scott, J.F., Clark, N.A. (eds) Incommensurate Crystals, Liquid Crystals, and Quasi-Crystals. NATO ASI Series, vol 166. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-0184-5_19
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DOI: https://doi.org/10.1007/978-1-4757-0184-5_19
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