Phase equilibria and crystal chemistry in the system Sr-Ca-Cu-O under high oxygen pressure

A. D. Robertson*, P. V.P.S.S. Sastry, A. R. West

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)


Phase equilibria in the system SrO-CaO-CuO have been studied under high oxygen pressures. The recently discovered non-superconducting binary phase, Sr0.74(3)CuO2, which is stable only under high oxygen pressure, forms a complete range of solid solutions with the structurally related phase, Ca0.81(1)CuO2. These materials have complicated superstructures and may form a family of Vernier phases, such as was found in Sr0.74(3)CuO2. Stabilities and oxygen stoichiometries of tetragonal Sr2-2xCa2xCuO3+δ (0.0 ≤ x ≤ 0.1) and Sr14-14xCa14xCu24O38+δ (0.0 ≤ x ≤ 0.5) solid solutions under high oxygen pressures are also discussed.

Original languageEnglish
Pages (from-to)637-643
Number of pages7
JournalJournal of the European Ceramic Society
Issue number6
Publication statusPublished - 1996
Externally publishedYes


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