BaCO3�CTiO2 Solid State Reaction: A Kinetic Study

Barium titanate (BaTiO₃) powders were synthesized by a solid state reaction between BaCO₃ and TiO₂ at high temperatures. Based on the empirical model for BaTiO₃ formation proposed by Beauger et al. [6], a simple mathematical model to represent the experimental results was derived. The assumptions of the model within a physical framework are discussed. It is believed that the proposed mathematical model can contribute to the understanding of the mechanisms that control BaTiO₃ formation at high temperatures.