Abstract

The theoretical observation of the critical point for the isotropic to smectic-C phase transition in the presence of the electric field is reported. The influence of an external electric field on the isotropic to smectic-C phase transition has been studied using Landau phenomenological theory. Analytic results are given for the phase boundary, stability limits, and location of the critical points of the isotropic to smectic-C phase transition with positive dielectric anisotropy. Topological classification of phase diagrams in the field–temperature coordinates is performed.

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