The electrocaloric effect in Pb(Sc0.5Nb0.5)O3 ceramic

Results of the electrocaloric effect (ECE) studies of Pb(Sc0.5Nb0.5)O3 ceramic in the temperature range from 320 to 400 K are reported. A great value (ΔTmax = 0.9 K) of the electrocaloric effect is observed. The temperature and field dependence of ECE is consistent with the presumption of a polar and nonpolar phase mixing at temperatures above the dielectric constant maximum temperature. The great value of ECE in Pb(Sc0.5Nb0.5)O3 can be attributed to the great temperature dependence of dielectric polarization in the polar regions, which is hardly affected by the electric field.