High resolution x-ray measurements on smectic cliquid crystal mixtures
- 1 February 1991
- journal article
- research article
- Published by Taylor & Francis in Ferroelectrics
- Vol. 114 (1) , 345-355
- https://doi.org/10.1080/00150199108221597
Abstract
We report on high resolution x-ray measurements of two commercial ferroelectric liquid crystal mixtures. Both materials show a second order smectic A* to smectic C* phase transition. The measured tilt angle, Φp was fitted to the power law expression Φp = Φ ot −β (with the reduced temperature, t = (Tc - T)/TC; TC is the smectic A to smectic C* phase transition temperature), giving β = 0.31 ± 0.02 for one and β = 0.33 ± 0.03 for the other mixture. We discuss the discrepancy between the x-ray tilt angles and those obtained by conventional optical methods.Keywords
This publication has 8 references indexed in Scilit:
- Dielectric relaxation in the smectic- and smectic- phases of a ferroelectric liquid crystalPhysical Review A, 1989
- Dependence of spontaneous polarization, rotational viscosity and helical pitch of smectic c* compounds on the enantiomeric excessFerroelectrics, 1988
- New practical broad range FLC-mixtures for display applicationFerroelectrics, 1988
- Mean-Field to Tricritical Crossover Behavior near theTricritical PointPhysical Review Letters, 1988
- Smectic C* Chevron Layer Structure Studied by X-Ray DiffractionJapanese Journal of Applied Physics, 1988
- Evidence of a first-order smectic-A–smectic-transition and its approach to tricritical behaviorPhysical Review A, 1988
- Evidence for the ‘‘zigzag’’ model of the smectic-Cphase in the liquid crystal-butoxyphenylester 4-decyloxybenzoic acid (4OP10OB): A high-resolution x-ray studyPhysical Review A, 1986
- Molecular tilt in the smectic C phase : a zigzag modelAnnales de Physique, 1978