Author/Editor		Levstik, A; Kutnjak, Z; Žekš, B; Dumrongrattana, S; Huang, CC
Title		Dielectric method for determining the electrical critical field in ferroelectric liquid crystals
Type		članek
Source		J Phys II
Vol. and No.		Letnik 1, št. 7
Publication year		1991
Volume		str. 797-803
Language		eng
Abstract		Both the electrical critical field and the dielectric constant (etha0 delta ethaG) associated with the Goldstone mode in the ferroelectric liquid crystals are related to the helical pitch. A direct relation between these two physical quantities is established. We have calculated the electrical critical field for both DOBAMBC and DOBA-1-MPC compound fromt he measured temperature variation of etha0 delta ethaG and polarization without any adustable parameter. Just below the transition temperature region, the results obtained agree qualitatively with the experimental data. Away from the transition temperature, thre exist systematic deviations.
Descriptors		RESEARCH DESIGN TEMPERATURE ELECTROMAGNETIC FIELDS CRYSTALLOGRAPHY THERMODYNAMICS