Abstract
Subsolidus phase relations in the system BaO‐CeO2‐TiO2 were investigated using X‐ray powder diffraction. The existence of the binary compound CeTi2O5 was confirmed, and its limited stability was studied before the ternary system was investigated. Six compatibility triangles were established in the ternary system at 1200°C. No ternary compound was detected. Extensive mutual solid solubility was observed between BaTiO3 and BaCeO3, whereas little or no solid solubility occurred between the other compounds in the system. The effects of small additions of CeO2 on the tetragonal→Cubic and cubic→hexagonal transition temperatures of BaTiO3 were investigated.
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