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Abstract
Dielectric measurements in the frequency range 50 Hz to 1 MHz at varying bias and temperatures have been carried out in three ferroelectric liquid crystal mixtures in the SmC* and SmA phases aligned in planar orientation. The sample cells are in volume stabilized and surface stabilized geometry. Here we report the observation of relaxation modes namely New Relaxation Mode “NRM”, Surface Stabilized Domain Mode “SSDM” and Bulk Domain Mode “BDM”. The relaxation frequency fr and dielectric strength Δε corresponding to these modes has been evaluated.