Perovskite chemists searching in the CaOTiO 2 system initially found four phases stable above 1300 C: CaO,

Perovskite chemists searching in the CaO–TiO₂ system initially found four phases stable above 1300 °C:

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CaO, Ca,Ti07, CaTiO3, and TiO. CaO, CaTiO3, and TiO were reported to melt congruently at 2600 C, 1970 C, and 1830 C and Ca3TiO, to melt incongruently at 1750 C. Eutectics were reported at XTio = 0.29 and 0.76 with melting points of 1695 C and 1460 C. Sketch and fully label a phase diagram for this system.