Slurry Synthesis of Bismuth Sodium Titanate with a Transient Aurivillius-Type Structure
Using Bi4Ti3O12 slurry as a precursor, bismuth sodium titanate with a transient Aurivillius-type structure was synthesized at room temperature. The typical grain size of the as-prepared powders was 40 nm. The powders retain the Aurivillius structure when the annealing temperature was lower than 800°C, with the crystal grains growing rapidly below 600°C. After annealing at 900°C for 3 h, the structure transformed into prototypal perovskite. Powders prepared by this method can be used to form textured ceramics with high density and homogenous grain size.
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Document Type: Research Article
Affiliations: State Key Laboratory of Fine Ceramics and New Processing, Department of Materials Sciences & Engineering, Tsinghua University, Beijing 100084, China
Publication date: 2010-04-01