摘要
In this work,electrocaloric properties of Pb(Mg_(1/3)Zr_(2x/3)Nb_(2(1-x)3))O_(3-x/3) polycrystalline ceramics for different stoichiometric compositions have been investigated.The results show that largest changes(ΔT)are in range of 1.07 to 4.84 K in 10 kV cm^(-1) electric field change.These values are significantly large,and are comparable with values of other lead-containing ceramics under the same or larger electric field shift.The conclusion is that these materials are excellent candidates for working materials in refrigeration and liquefaction devices in a wide temperature range.
