Room temperature giant electrocaloric properties of relaxor ferroelectric 0.93PMN-0.07PT thin film

Abstract

In this paper, 0.93PMN-0.07PT thin film shows a giant electrocaloric effect at room temperature. At electric field shift of 723 kVcm, the peak value of ΔS of 0.93PMN-0.07PT thin film is 13.05 JK.kg. The largest change (12.24 °C in 15.18 V, i.e. 0.8 KV) at TC 27 °C is more than the previous results obtained in giant electrocaloric PbZr0.95Ti 0.05O3 films near the ferroelectric Curie temperature of 222°C (12 K in 25 V, i.e. 0.48 KV) A.S. Mischenko, et.al. Science 311, 1270 (2006). © 2013 Copyright 2013 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License.