Effects of dispersion states of Pb, Ti and Zr ions upon the formation of PbTiO₃ and PbZrO₃

Kinetic studies on the formations of PbTiO₃ and PbZrO₃ were made using the mixtures of PbO TiO₂ and PbO ZrO₂ with different dispersion states of the constituents. Although the rates of both formations were accelerated with an increase in the dispersion states, the activation energy for the formation of PbTiO₃ was found not to depend upon the dispersion states of the constituents. On the contrary, activation energy for the formation of PbZrO₃ was much lowered with an increase in the dispersion states of PbO and ZrO₂ in the mixture.