9:30 AM - 9:45 AM
[19a-133-3] Electrocaloric effects in antiferroelectric PbZrO3 thin films
Keywords:Anti-ferroelectrics, electrocaloric effect
Temperature dependences of polarization hysteresis loops of PbZrO3 thin films fabricated chemical solution deposition were evaluated for applications of energy storage capacitor and the cooling refrigeration using electrocaloric effects. The maximum polarization did not change to 175℃ and decreased at 205℃. With increasing of temperature, the stored energy decreased in keeping pace with the monotonous decrease of switching electric fields of double hysteresis lops. Temperature dependence of the polarization, P(T), under different electric field draw convex curves on the top. P(T) curves with positive slope are observed at temperatures below 145℃ under electric field less than 300kV/cm. The adiabatic temperature change DT of -4.4℃ at 25℃ is estimated under DE = 160kV/cm.