The particle shape obtained via the molten salt synthesis can be predicted from the crystal structure of the product, but the prediction is not always successful because the chemical species of the salt also influence the particle shape, because the γ-plot (Fig. 6(a)) is determined by the combination of the product and salt materials. The particle shape is often determined in the particle-growth stage with a low degree of supersaturation. The growth under a low degree of supersaturation is similar to that in the single-crystal growth from solution. Therefore, the reported shape of single crystals can be used to predict the shape of particles obtained via the molten salt synthesis (Elwell & Scheel, 1975).