Abstract
PbZr0.95Ti0.05O3 thin film has the highest electrocaloric properties of all the oxide thin films (0.48 K V−1). Here, it is shown giant electrocaloric properties in 200 nm (1 0 0)-oriented PMN–PT 68/32 film near the ferroelectric Curie temperature of 146 °C. The results indicate the significance of this system to achieve electrocaloric entropy change and temperature change, up to 32.21 J/kg °C and 14 K, respectively, in 12 V (i.e. 1.155 K V−1) near the Curie point. This exceeds the previous best results obtained in PbZr0.95Ti0.05O3 thin film.
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