Abstract
In this letter, ferroelectric Pb(Mg0.067Nb0.133Zr0.8)O3 (PMNZ) shows an electrocaloric effect at high temperature. This work is based on a phenomenological model of the electrocaloric effect in PMNZ using experimental data of polarization versus electric field and temperature. It is showed that the cooling ΔT per unit field MV m−1 in PMNZ is significantly larger and is comparable with value of the famous lead-containing bulk ceramics such as PbMg1/3Nb2/3O3 and PMN–PT (Pb(Mg1/3Nb2/3)O3–PbTiO3). This sample is consequently very interesting material in the framework of electrocaloric refrigeration devices for automotive, aerospace, or food industries.
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