Effect of ZnO on (ferroelectric) fatigue retention and thermal stability of ferroelectric properties in lead free (K0.5Na0.5)(Nb0.7Ta0.3)O3 ceramics

Vineetha, P; Jose, Roshan; Saravanan, K.

doi:10.1039/c9ra06526a

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Cited by 6 publications

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Electrocaloric Effect in PZT Thick Film for the Cooling Device Applications

Vandana

Gupta

Tandon

et al. 2021

Springer Proceedings in Materials

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Electrocaloric effect of sol gel deposited thick film of PZT has been investigated in the present work. The film is successfully deposited on Nickel substrate with an optimized annealing temperature of 650 °C. Single phase PZT thick film has been obtained on nickel substrate at 650 °C annealing temperature. The ferroelectric hysteresis loops were measured at 1 kHz frequency in the temperature range of 310 K-430 K respectively. At an external applied electric field of 250 kV/cm, maximum reversible adiabatic temperature change, T = 1.50 K was calculated at 430 K. The electrocaloric responsivities in terms of change in entropy and change in temperature are also determined for the optimized PZT thick film at an applied electric field of 250 kV/cm and found to be 0.06 × 10 −6 K • m/V and 0.04 × 10 −6 J • m/(kg • K • V).

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