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Abstract
Continuous evolution of polar properties from ferro- to antiferro- has been observed in binary mixtures. Pure components exhibit antiferroelectric or ferroelectric smectic phases. The static dielectric constant in antiferroelectric-like smectic phase increases continuously upon increasing the ferroelectric component concentration. This behavior could be attributed to changes of the strength of azimuthal tilt angle correlations leading to a frustrated state. In materials with frustrated phase ferroelectricity can be enforced by strong boundary conditions in thin cell. The switching behavior found in thin cells was similar to that observed in thresholdless antiferroelectrics.
