Thermodynamic assessment of the PZT system
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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.