ultrafine barium titanate manufacturing method using the solid state reaction method

摘要

PURPOSE: A fabrication method of barium titanate using solid state reaction is provided to allow active growth of BaTiO3 at the same time preventing particles from lumping together. CONSTITUTION: A fabrication method of barium titanate comprises the step of heat-treating Ba precursors, Ti precursors, alkaline salts, and BaTiO3 seeds. More specifically, the fabrication method of barium titanate is comprised of: mixing all those ingredients, pulverizing, and heat-treating them; and washing the heat-treated powder, and wetly pulverizing it. The alkaline salts are selected among LiCl, NaCl, KCl, LiF, NaF, KF, LiBr, NaBr, KBa, LiI, NaI, KI, and their mixture. The BaTiO3 seeds have average particle size of 0.1m~0.5m and unimodal particle size distribution.