Pb(Zn1/3Ta2/3)O3-PbTiO3 derived from mechanical activation

Abstract

Nanocrystalline Pb(Zn1/3Ta2/3)O3 (PZTa) of perovskite structure, which cannot be synthesized by either the conventional solid-state reaction of mixed oxides or wet chemistry routes, has been successfully synthesized via a mechanical activation route. The effects of PbTiO3 (PT) doping in PZTa on the phase formation, thermal stability of the nanocrystalline perovskite phase, and dielectric properties of the resulting PZTa-PT are studied. PZTa doped with a low PT content exhibited a diffuse phase transition, while those with high PT contents demonstrated an expected sharp phase transition at the Curie temperature. © 2006 The American Ceramic Society.