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Rapid mechanochemical synthesis of fine barium titanate nanoparticles

2008; Elsevier BV; Volume: 62; Issue: 17-18 Linguagem: Inglês

10.1016/j.matlet.2008.01.083

1873-4979

Satoshi Ohara, Akira Kondo, Hirofumi Shimoda, Kazuyoshi Sato, Hiroya Abe, Makio Naito,

Acoustic Wave Resonator Technologies

A rapid mechanochemical synthesis of fine barium titanate (BaTiO3) nanoparticles is reported. Mechanical forces such as compression and shear stress were repeatedly applied on a mixture of BaCO3 and TiO2, using an attrition type milling apparatus. The formation of BaTiO3 was observed in the subsequent milling, and its synthesis was completed after only 12 min. The particle size of the synthesized BaTiO3 was mostly of several 10 nm. The amount of hydroxide ions incorporated into the BaTiO3 nanoparticles was less than 0.3 wt.%.