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Citation: Xu Mingxia, Yu Kan, Yang Yimin, Xu Tingxian. Synthesis of Monodispersed Superfine SrTiO₃ Particles by Fractional Precipitation[J]. Chinese Journal of Applied Chemistry, ;1998, 15(1): 37-40. shu

Synthesis of Monodispersed Superfine SrTiO₃ Particles by Fractional Precipitation

Department of Materials Science and Engineering, Tianjin University, Tianjin 300072

Received Date: 14 July 1997
Revised Date: 20 September 1997

The highly pure、superfine and monosize-distribution strontium titanate crys-talline particles have been synthesized by fractional precipitation, when titanium tetrachlo-ride and strontium chloride were used as raw materials and urea and sodium hydroxide as precipitation agents. The influences of the precipitation agents on formation of the particles and properties of the powders have been discussed. The results show that urea as the first precipitation agent improves the sphericity of the particles and monosize-distribution. Sodi-um hydroxide as precipitation agent is favarable to the crystallization and yield of strontium titanate. Particle sizes down to 30 nm on average were obtained. The powders show a goodsinterability.
- strontium titanate,
- superfine powder,
- monodispersed particle,
- fractional precipitation
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Synthesis of Monodispersed Superfine SrTiO₃ Particles by Fractional Precipitation