Research Development of Preparation Technology of BaTiO3 Nano-Power

Barium titanate (BaTiO3) used a strong dielectric materials, piezoelectric materials and ferroelectric materials, which is a kind of important electronic ceramic materials. With the miniaturization of electronic components, miniaturization, thin layer, nanosized barium titanate powder become an inevitable developing trend of barium titanate dielectric ceramics material. Some recent new progress for synthesis of barium titanate at home and abroad are summarized, the commentaries are made on the preparation process about advantages or disadvantages. Meanwhile, the analysis is made on the developing trend. Supercritical fluid extraction method have simple process, high extraction efficiency, no organic solvent residual, products of good quality, no environmental pollution, and so on. Research of BaTiO3 nanopower may become an important direction of the field in the future.