Author/Editor		Levstik, A; Kutnjak, Z; Levstik, I; Žekš, B
Title		Rotational viscosity in ferroelectric liquid crystal DOBAMBC determined by dielectric method
Type		članek
Source		Ferroelectrics
Vol. and No.		Letnik 109
Publication year		1990
Volume		str. 267-72
Language		eng
Abstract		Spontaneous polarization, tilt, pitch of the helix, and low frequency dielectric dispersion were measured as functions of temperature in the smectic C* phase of the DOBAMBC. It is shown that measured theromodynamic quantities satisfy simple relations, predicted by a phenomenological model for ferroelectric liquid crystals. These relations allow the evaluation of the rotational viscosity, which temperature dependence is of Arrhenius type with an activation energy of 0.51 eV.
Descriptors		MODELS, THEORETICAL RESEARCH DESIGN VISCOSITY CRYSTALLOGRAPHY THERMODYNAMICS ELECTROMAGNETIC FIELDS