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Phenomenological model for antiferroelectric liquid crystals: phase sequences

B. Žekš, Mojca Čepič

Open publisher page 11 citations

Abstract

The discrete phenomenological model of antiferroelectric liquid crystals is reviewed that takes into account interlayer interactions up to next nearest neighboring layers. Possible predicted tilted phases are presented and compared with experimentally observed phases: the ferroelectric SmC* phase, the antiferroelectric SmCA* phase, the ferrielectric SmC(gamma )* phase and the short pitch SmC(alpha )* phase. It is also shown that various observed sequences of phases in dependence of temperature can be obtained by properly choosing the model parameters.

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What this paper is about

The discrete phenomenological model of antiferroelectric liquid crystals is reviewed that takes into account interlayer interactions up to next nearest neighboring layers. Possible predicted tilted phases are presented and compared with experimentally observed phases: the ferroelectric SmC* phase, the antiferroelectric SmCA* phase, the ferrielectric SmC(gamma )* phase and the short pitch SmC(alpha )* phase. It is also shown that various observed sequences of phases in dependence of temperature can be obtained by properly choosing the model parameters.

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Available abstract

The discrete phenomenological model of antiferroelectric liquid crystals is reviewed that takes into account interlayer interactions up to next nearest neighboring layers. Possible predicted tilted phases are presented and compared with experimentally observed phases: the ferroelectric SmC* phase, the antiferroelectric SmCA* phase, the ferrielectric SmC(gamma )* phase and the short pitch SmC(alpha )* phase. It is also shown that various observed sequences of phases in dependence of temperature can be obtained by properly choosing the model parameters.

Key concepts: Antiferroelectricity, Phenomenological model, Ferroelectricity, Phase (matter), Materials science, Condensed matter physics, Liquid crystal, Physics

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