Abnormal electrocaloric effect near ambient temperature in MgO modified NBT-KBT

Abstract Present work proposes the advancement in the field of modern refrigeration based upon electrocaloric effect. The values of electrocaloric effect near ambient temperature is demonstrated in (Na0.41K0.09Bi0.50)(Ti1-xMgx)O3 where x = 0, 0.025 and 0.050. The MgO modified NBT-KBT sold solution has exhibited abnormal electrocaloric effect with ΔT ~ -2.03 and electrocaloric strength ΔT/ΔE = 0.033 Kcm kV-1 at 60°C for highest doping. Moreover, a broad operating time range Tspan = 50-80 °C has achieved which allow this material to be useful for potential cooling application and provide new horizons in this field.