ChemInform Abstract: 30 kbar Phase Equilibria of the La2O3-SrO-CuO System at 950 °C

1997 equilibria E 4000

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equilibria

30 kbar Phase Equilibria of the La2O3-SrO-CuO System at 950 ◦ C. — In the ternary phase diagram, CuO, La2O3, and SrO are stable phases at the apexes. La2CuO4, La2Cu2O8 are stable intermediate phases in the LaO1.5-CuO and Sr2CuO3, SrCuO2, and Sr14Cu24O41 in the CuO-SrO binary systems. Four solid solutions are stable under the title conditions: La2-xSrxCuO4-δ (0.00 ≤ x ≤ 1.29), La2-xSr1+xCu2O6+. delta. (0.03 ≤ x ≤ 0.20), La2-xSrxCu2O5-δ (0.0 . ltoreq. x ≤ 1.08) and LaxSr14-xCu24O41 (0.00 ≤ x ≤ 6.15). Differences to the 1 atm and 10 kbar phase diagrams are discussed. — (GENY, J.; MEEN, J. K.; ELTHON, D.; J. Am. Ceram. Soc. 80 (1997) 1, 176-180; Dep. Chem., Univ. Houston, Houston, TX 77204, USA; EN)

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