Tetragonal BaTiO~3, perovskite-typed PbTiO~3 and (Ba, Pb)TiO~3 solid solution have been prepared from barium (lead) acetate and tetrabutyl titanate under milder hydrothermal condition. As compared with chlorion and nitrate ion, acetate ion would accelerate the formation of great-grained particles of BaTiO~3 more considerably. The tetragonal BaTiO~3 could be synthesized by adopting reactive titanium source, tetrabutyl titanate, in alkali aqueous solution at as low as 200℃- 240℃. The higher degree of fill would promote the production of tetragonal BaTiO~3.

Key words: TITANIC ACID BARIUM, HYDROTHERMAL METHOD