Electrical Parameters of a Single Mode Antiferroelectric Liquid Crystalline Material

Abstract

The electrical properties of 7F6Bi, a liquid crystalline single-mode antiferroelectric, have been studied. The material has antiferroelectric SmC* phases alongside paraelectric SmA* and ferroelectric SmC* at low temperatures (83 °C). Since the SmA* phase's dielectric strength grows with decreasing temperature and follows the Curie-Weiss equation, molecular tilt fluctuations in the MHz area have caused the appearance of the first relaxation mode. The SmC* phase exhibits a second relaxation mode as a result of molecular phase fluctuations. The anti-ferroelectric arrangement of the molecules resulted in the SmC* phase's single relaxation mode. At 104.3 degrees Celsius, its dielectric strength is 0.55.