Method for preparing perovskite complex oxide powder of formula ABO3

摘要

Ba(OH)₂.8H₂O is fused by heating. The fused Ba(OH)₂ is allowed to react with TiO₂ powder having a specific surface area of 250 m²/g or more to prepare a cubic crystalline BaTiO₃ having high crystallinity. The BaTiO₃ is calcined to yield a fine, tetragonal crystalline BaTiO₃ powder having high crystallinity. Thus, a high quality BaTiO₃ having high crystallinity can be prepared at a low cost.