Temperature Dependence of the Polarization and Tilt Angle Under an Electric Field Close to the Smectic AC* Phase Transition in a Ferroelectric Liquid Crystal

Abstract

The temperature dependence of the polarization P and the tilt angle θ is calculated here in the presence of a constant electric field near the smectic AC* phase transition of a ferroelectric liquid crystal using a mean field model. We demonstrate here the temperature dependence of P and θ under some fixed electric fields for the ferroelectric liquid crystal of 4-(3-methyl-2-chlorobutanoyloxy)-4′-heptyloxybiphenyl. Our predicted values of P and θ at various temperatures under fixed electric fields, follow similar critical behaviour as predicted for zero electric field from the mean field model near the smectic AC* phase transition in 4-(3-methyl-2-chlorobutanoyloxy)-4′-heptyloxybiphenyl.

Keywords:

• Polarization
• tilt angle
• smectic AC*