The reaction between Bi 2 O 3 and TiO 2 in molten LiCl‐KCl was examined with special emphasis on the reaction mechanism and the size of Bi 4 Ti 3 O 12 particles. The oxides reacted with LiCl to form an intermediate compound, which changed into Bi 4 Ti 3 O 12 on extended heating. Potassium chloride retarded the reaction between the oxides and LiCl and promoted the change from the intermediate compound to Bi 4 Ti 3 O 12 . Bi 4 Ti 3 O 12 particles prepared in the flux were platelike, irrespective of the preparation conditions, but their size depended on reaction temperature and time, the ratio of LiCl to KCl, and the amount of flux.
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Kimura et al. (1983) studied this question.