Abstract

Subsolidus phase relations in the ternary system SnO 2–TiO 2–Y 2O 3 have been investigated by means of X-ray powder diffraction. The samples are prepared by solid-state chemical reaction method at 1400 °C. The solid solution miscibility gap at room temperature for the TiO 2–SnO 2 system was determined to be content 22–68 mol% SnO 2, based on accurate determination of lattice parameters as functions of composition. The Y 2Ti 2− x Sn x O 7 forms a complete solid solution with pyrochlore-type structure.

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