Thermodynamic Assessment of the PZT System

Abstract

The thermodynamic assessment of the PZT system is carried out by the CALPHAD method. The thermodynamic properties of the phases are described using compound energy formalism (CEF) for the various solid phases and a solution model for the liquid. Three boundary systems PbO-ZrO₂, PbO-TiO₂ and ZrO₂-TiO₂ are reassessed based on the most recent experimental data, while the ternary PbO-TiO₂-ZrO₂ system is modelled for the first time. Calculated phase diagrams are compared with the experimental data.