The effect of poling condition on the piezoelectric properties of 0.3PNN-0.7PZT ceramics in the vicinity of MPB
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Piezoelectric ceramics 0.3Pb(Ni1/3Nb2/3)O3–0.7Pb(ZrxTi(1−x))O3 (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.
KeywordsPiezoelectric Property Spontaneous Polarization Poling Field Piezoelectric Ceramic Domain Switching
This work has been supported by the development program of national ocean high technology research (project No.869) : a shear flow sensor with airfoil (2010AA09Z102) is used to measure the oceanic turbulence. We would like to warmly thank Yubin Wang for his theoretical guidance and for the technical assistance from Analytical Center of Tianjin University.