抄録
We have investigated the cell thickness dependence of the electrooptic response and the dielectric behavior in an antiferroelectric liquid crystal, (R)-4-(1-methylheptyloxy-carbonyl)phenyl 4'-octyl biphenyl-4-carboxylate, ((R)-MHPBC). In a thin cell (3.9 μm), a dielectric relaxation of a ferrielectric phase was observed even in the temperalure region of the AF and SmC_A phases of a thick cell (29.5 μm). In the electrooptic measurements, the thresholdless behavior was observed in the thin cell, though the threshold of the field-induced phase transition was clearly recognized in the thick cell.
