X-ray diffraction studies of phase transformations between tetragonal and cubic phases in the BaSnxTi1−xO3 system

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X-ray powder diffraction has been used to investigate the cubic–tetragonal phase transformation and lattice constant in a BaSnxTi1−xO3 system (x = 0.0–0.2) at room temperature. The existing regions of tetragonal phase were strongly influenced by the amounts of tin (from x = 0.0–0.1). The mass fraction of the tetragonal phase decreases as substitution of tin for titanium increases until x = 0.1, while the mass fraction of the cubic phase increases simultaneously. The lattice constant of cubic phase and the cube roots of the unit-cell volumes of tetragonal phases indicate linear relations with the amounts of tin.

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