金属アルコキシドからのBaTiO_3及びSrTiO_3の合成

概要

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Single phase BaTiO3 and SrTiO3 powders were prepared by hydrolysis of Ba-Ti mixed alkoxide solutions in benzene and/or alcohol. Hydrolysis of mixed alkoxides at room temperature yielded amorphous powders, which were transformed to crystalline BaTiO3 and SrTiO3 by calcination over 400°C. When the mixed alkoxides were hydrolyzed at refluxing temperature, crystalline BaTiO3 and SrTiO3 were obtained. The effect of alkoxy group on the hydrolysis of barium alkoxide was investigated. As a result the electron micrographs of synthesized powder particles indicate that the shape and size of the powders are hardly influenced by the types of alkoxy group of starting alkoxides. EDX analysis showed that the synthesized SrTiO3 is chemically homogeneous up to 1000°C. By the similar method, Sr(Ti, Zr)O3 powders were also synthesized and characterized.
社団法人日本セラミックス協会の論文
1987-10-01