Effect of electric field on electrocaloric effect in Pb(Zr1 − xTix)O3 solid solution

A thermodynamic analysis is employed to investigate the intrinsic electrocaloric effect of Pb(Zr1 − xTix)O3 solid solution system under the different electric field. Theoretical analysis indicates that Pb(Zr1 − xTix)O3 system has the giant electrocaloric coefficient and the large adiabatic temperature change near its ferroelectric Curie temperature. The applied electric field decreases not only the electrocaloric coefficient but also its temperature dependence. Furthermore, it increases the adiabatic temperature change as well as its dependence of temperature. The temperature corresponding to the maximum of electrocaloric coefficient and adiabatic temperature change increases with the enhancement of electric field because of its first-order phase transition between ferroelectric phase and paraelectric phase.