Mechanochemical Synthesis of BaTiO3 from TiO2 and BaCO3

Mechanochemical synthesis of BaTiO 3 from a powder mixture of BaCO 3 and TiO 2 was investigated. An attrition type of milling apparatus was used. It was found that the mechanochemical reaction was strongly dependent on the size combination of the respective two materials. By milling a powder mixture of BaCO 3 (50nm) and TiO 2 (7nm), the single phase BaTiO 3 was synthesized after milling for only 15mm. On the other hand, the reaction was not well promoted by the milling of a mixture of BaCO 3 (50nm) and TiO 2 (70nm).