Ferroelectric and Piezoelectric Properties of 0.72Pb(Zr_0.47Ti_0.53)O₃–0.28Pb[(Zn_0.45Ni_0.55)_1/3Nb_2/3]O₃Thick Films for Energy Harvesting Device Application

Abstract

The Ferroelectric and piezoelectric properties of 0.72Pb(Zr0.47Ti0.53)O3–0.28Pb[(Zn0.45Ni0.55)1/3Nb2/3]O3 (PZT–PZNN) piezoelectric thick films were investigated for application to energy harvesting devices. The PZT–PZNN thick films were fabricated by a conventional tape casting process. The sintered PZT–PZNN thick film was highly dense and flat when the annealed temperature was 1100 °C. It exhibited substantial ferroelectric and piezoelectric properties of P r = 20.6 µC/cm2, d 33 = 370 pC/N, εT 33/ε0 = 1185, and k p = 0.44. Moreover, its d 33·g 33, which can characterize high energy density material, is as large as approximately 13050×10-15 m2/N. Therefore, the PZT–PZNN thick film can be a potential piezoelectric material for application to energy harvesting devices.