Hydrothermal Synthesis and Formation Mechanisms of Shape Anisotropic BaTiO3 Particles

Abstract

The effect of hydrothermal processing conditions on the morphology of barium titanate particles was investigated. Precursor materials were barium hydroxide solution and titania powders with fine or coarse particle size. The mechanisms of particle formation and the reaction kinetics were studied with respect to particle morphology by microscopy techniques. When ultrafine titania powders are used, it is proposed that BaTiO sub 3 particles < 100 nm form by crystallization of an amorphous intermediate phase. On the other hand, shape anisotropic BaTiO sub 3 particles are obtained when coarse titania powders are used as starting powders. It is suggested that the nucleation and growth of shape anisotropic particles occur in the solution supersaturated with Ti-ions by a dissolution and crystallization mechanism.

Department(s)

Materials Science and Engineering

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 American Ceramic Society, All rights reserved

Publication Date

1997-01-01

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