Microstructure and Piezoelectric Properties of PMN-PNN-PZT Ceramics with the Variation of PMN

In this paper, in order to develop the composition ceramics with the high piezoelectric properties for ultrasonic transducer, Pb[(Mn1/3Nb2/3)x(Ni1/3Nb2/3)0.10(Zr0.48Ti0.52)0.90−x]O3 ceramics were fabricated with the variation of Pb(Mn1/3Nb2/3)O3. The effects of Pb(Mn1/3Nb2/3)O3 (abbreviated as PMN) on their microstructure and piezoelectric properties were systematically investigated. The tetragonality was decreased in the ceramics with the increase of Pb(Mn1/3Nb2/3)O3. When Pb(Mn1/3Nb2/3)O3 and sintering temperature were 8 mol%, 940 °C, respectively, the excellent physical properties of d33 = 302 pC/N, εr = 1390, kp = 0.542, Qm = 1378 were obtained in the specimens for ultrasonic transducer.