Physical properties of new binary ferroelectric mixture

Abstract

Abstract Physical properties of new binary mixture of two ferroelectric liquid crystalline compounds, regarding the properties of the components, were studied. It turned out that both components and the mixture exhibit the ferroelectric smectic C* phase in a wide temperature range. Moreover, the calorimetric, texture observations as well as dielectric studies revealed an additional monotropic liquid crystalline phase for one of the mixture component, which was identified, based on X–ray diffraction results, as tilted one with hexagonal order within the layers. Dielectric spectroscopy has shown the strong low frequency relaxation process in the SmC* identified as related to Goldstone mode based on the mean–field model. Additionally, the molecular reorientation around the short axis was recognized in the monotropic hexatic phase. The temperature dependencies of the spontaneous polarization and switching time for new binary mixture and its components were compared and analyzed in terms for possible applications.