Phase transitions in PZT solid solutions

Abstract
The information concerning the F-P and FT-FR transitions in the PZT solid solutions are discussed in terms of the FSPT theoretical mechanisms for solid solutions. The connection between the polymorphic and morphotropic phase transitions is explained by means of a tentative F-P diagram for the PbZrO3--PbTiO3 system, in agreement with the thermodynamical treatment concerning the evolution of the free energy function in a binary system.