Abstract
Solid solution of relaxor PMN and antiferroelectric PZ, [Pb(Mg(1−x)/3Nb2(1−x)/3Zrx)O3], behaves like ferroelectric with increasing PZ content following a wide composition range of diminishing relaxor properties. Electro-caloric measurements on three relaxor and one ferroelectric composition of this solid solution have been carried out by indirect method. All the compositions give a maximum temperature change of ∼0.33K on application of 1kV/mm electric field. This value is higher than the PLZT or PMN–PT based relaxors. A shift of ∼35°C in the temperature of electro-caloric maximum was observed with application of electric field, for relaxor compositions, attributed to the field induced effect on the transition temperature. Similar shift for ferroelectric composition is significantly lower (∼8°C).
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