The piezoelectric ceramics (1 - x - y)PbTiO3 - xPbZrO(3) - yBi(Ni1/2Ti1/2)O-3 exhibit greatly enhanced piezoelectric properties at morphotropic phase boundaries (MPB). X-Ray diffraction (XRD) analysis was used to investigate the MPB structure of (1 - x - y)PbTiO3 - xPbZrO(3) - yBi(Ni1/2Ti1/2)O-3 ceramics. The dielectric, ferroelectric, and piezoelectric properties were systematically investigated. The morphotropic phase boundaries are at x = 0.10, 0.20, 25; y = 0.46, 0.39, 0.34, respectively. An optimum high temperature piezoelectric ceramic is obtained at the composition of x = 0.20 and y = 0.39 (d(33) = 510 pC/N, d(33)*(bi) = 462 pm/V, T-c = 318 degrees C, E-c = 20.0 kV/cm and P-r = 25.5 mu C/cm(2)). (C) 2013 Elsevier B.V. All rights reserved.