Abstract
La-doped 0.25Pb(Zn1/3Nb2/3)O3-0.75Pb(ZrxTi1-x)O3 (x = 0.51–0.57) ceramics were prepared by a conventional mixed oxide method. The piezoelectric and dielectric properties of various compositions near the morphotropic phase boundary (MPB) were investigated. The MPB was determined by X-ray diffraction (XRD) patterns. The optimal properties were obtained in the specimen with Zr/Ti = 53/47: d33 = 570 pC/N, kp = 0.60, er = 3900, tgδ = 1.9%, Tc = 204°C, Pr = 35.21 μC/cm2, Ec = 11.62 kV/cm, which means it is a good candidate for applications.
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