The structure, dielectric properties, and Curie temperatures of Pb(Zr1-xTix)O-3 doped with 5 mol% Bi(Zn0.5Ti0.5)O-3 (PZT-5BZT), 5 mol% BiFeO3 (PZT-5BF), and 5 mol% BiAlO3 (PZT-5BA) ceramics prepared by the conventional solid state reaction are reported. The structural phase transition temperature are compared with undoped and Bi(B)O-3 doped Pb(Zr1-xTix)O-3 ceramics for 0.48 < x <= 1 where B = Zn, Fe, and Al. A turning point was found around x = 0.70 where the Curie temperature (T-C) of Bi(B)O-3-PZT solid solution increases beyond that of pure PZT. Unlike most PZT-based ceramics, these systems show enhanced tetragonality. This effect is most dramatic in the PZT-5BF system, in which an extremely large c/a ratio of 1.057 is achieved for x = 0.90 sample, leading to the T-C as high as 768 K. (C) 2011 Elsevier B.V. All rights reserved.