Microwave-hydrothermal synthesis of nano-sized Sn2+-doped BaTiO3 powders and dielectric properties of corresponding ceramics obtained by spark plasma sintering method

作者：Xie Yahong^*; Yin Shu; Hashimoto Takatoshi; Kimura Hisamichi; Sato Tsugio

来源：Journal of Materials Science, 2009, 44(18): 4834-4839.

DOI：10.1007/s10853-009-3737-8

Ternary oxides containing Sn2+ are rare and difficult to prepare using solid state reaction due to disproportionation of Sn2+ at high temperature. In this paper, nanoparticles of barium titanate doped with different amounts of Sn2+ consisting of single phase perovskite structure were successfully synthesized for the first time by using a microwave-assisted solvothermal reaction. The particle sizes were about 20-40 nm in diameter and increased with increasing the amount of doped tin. Solidified ceramic bodies were obtained using a spark plasma sintering method under argon atmosphere avoiding the disproportionation and oxidation of Sn2+ in the air. The grain size and dielectric constant of the sintered body decreased with increasing the amount of doped tin.

• 出版日期2009-9