Solid Phase Relations at 950°C in La‐Ba‐Cu‐O

D. Klibancw*, K. Sujata, T. O. Mason

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Subsolidus phase relations in the La2O3–BaO–CuO system were studied at 950°C. Three previously reported binary compounds exist (La2CuO4, BaLa2O4, and BaCuO2) and five previously reported ternary phases occur (La2‐xBaxCuO4‐(x/2)+δ, La4‐2xBa2+2xCu2‐xO10‐2x, La2‐xBa1+xCu2O6‐(x‐2), La3‐xBa3+xCu6O14±δ, and La4BaCu5O13+δ). Of the seven phases in the diagram, all but BaLa2O4, BaCuO2, and La4BaCu5O13+δ were shown to exhibit significant ranges of solubility. The diagram is important in that both >30 K (La2‐xBaxCuO4‐(x/2)+δ) and >90 K (La3‐xBa3+xCu6O14+δ, x=1) superconductors occur.

Original languageEnglish (US)
Pages (from-to)C‐267-C‐269
JournalJournal of the American Ceramic Society
Issue number5
StatePublished - May 1988

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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