Effect of Temperature on Ferroelectric and Piezoelectric Behaviour of Mn-Doped 0.75BF-0.25BT Multiferroic Ceramics.

The effect of temperature on ferroelectric and piezoelectric behaviour of multiferroic ceramics (1 mol% Mn-doped 0.75BF-0.2BT) was investigated under an electric field at various temperatures (30 to 200°C). The polarization hysteresis loop and strain loop of ceramics were investigated at various temperatures. The effect of temperature was represented by the change of polarization hysteresis loop, strain loop and dielectric properties with various temperatures. The results showed that the remanant polarization and remanant strain of ceramics were improved with increasing temperature. The improving of these properties could be attributed to the greater domain switch ability at high temperature. [ABSTRACT FROM AUTHOR]