The effect of poling condition on the piezoelectric properties of 0.3PNN-0.7PZT ceramics in the vicinity of MPB

Piezoelectric ceramics 0.3Pb(Ni 1/3 Nb 2/3 )O 3 –0.7Pb(Zr x Ti (1−x) )O 3 (x = 0.42−0.46) were successfully fabricated via the conventional solid-state reaction. XRD demonstrated that the morphotrophic phase boundary (MPB) lay at x = 0.44. The effect of poling condition on the piezoelectric properties of ceramics in the vicinity of MPB was studied by the reserval of domains. The piezoelectric properties at MPB under the optimum poling condition of 2 kV/mm for 10 min in a silicon oil bath at 60 °C were d 33 of 538 pC/N and k p of 0.636, respectively.