Barium-bismuth titanate, BaBi_4Ti_4O_(15)(BBT), a member of Aurivillius bismuth-basedlayer-structure perovskites, was prepared from stoichiometric amounts of barium titanate andbismuth titanate obtained via mechanochemical synthesis. Mechanochemical synthesis wasperformed in air atmosphere in a planetary ball mill. The reaction mechanism of BaBi4Ti4O15and the preparation and characteristics of BBT ceramic powders were studied using XRD,Raman spectroscopy, particle analysis and SEM. The Bi-layered perovskite structure ofBaBi_4Ti_4O_(15)ceramic forms at 1100℃ for 4 h without a pre-calcination step. Themicrostructure of BaBi4Ti4O15 exhibits plate-like grains typical for the Bi-layered structuredmaterial and spherical and polygonal grains. The Ba~(2+)addition leads to changes in themicrostructure development, particularly in the change of the average grain size.
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