Experimental Studies on Ferrielectricity in RbLiSO4

Successive phase transitions in RbLiSO 4 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.

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