Experimental Studies on Ferrielectricity in RbLiSO₄

Abstract

Successive phase transitions in RbLiSO₄ at about 166, 185, 202 and 204°C have been investigated by an improved high-sensitive DTA, a differential scanning calorimetry and an automatic measurement of dielectric constant. Temperature- and field-dependences of 50 Hz D–E hysteresis loop are studied in detail. In the phase between 166 and 185°C, a triple hysteresis loop due to ferrielectricity is ascertained.