Effects of agitation milling of either TiO2 or a mixture of TiO2 and BaCO3 on the solide-state synthesis and properties of BaTiO3 are studied. Milling TiO2 produces the surface defects. For a mixture of TiO2 and BaCO3, milling brings not only high compositional homogeneity but also forms BaTiO3 precursor. The rate of formation of BaTiO3 is examined by high temperature X-ray diffraction analysis. Synthesis of BaTiO3 is accelerated by compositional homogeneity and BaTiO3 precursor formation from the stating mixture by agitation milling. BaTiO3 powders that have been mechanically treated starting mixture, and calcined at 1100°C comprise homogeneous spherical particles with narrow particle size distribution.
