Author/Editor		Žekš, B; Carlsson, T; Filipič, C; Levstik, A
Title		Macroscopic description of ferroelectric chiral smectic C liquid crystals
Type		članek
Source		In: Scott JF, Clark NA, editors. Proceedings of a NATO advanced research workshop on Incommensurate crystals, liquid crystals, and quasi-crystals; 1986 July 7-11; Boulder. New York: Plenum Press,
Publication year		1987
Volume		str. 215-22
Language		eng
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 form some systems recently.
Descriptors		BIOPHYSICS CRYSTALLIZATION MODELS, THEORETICAL