Improved corrosion resistance of cation substituted YBa2Cu3O7-δ

Ji Ping Zhou, Steven M. Savoy, Rung Kuang Lo, Jianai Zhao, Mark Arendt, Y. T. Zhu, A. Manthiram, John T. McDevitt

Research output: Contribution to journalArticlepeer-review


A cosubstitution of Ca2+ for Y3+and La3+ for Ba2+ in YBa2Cu3O7-δ is found to improve the corrosion resistance of this high- Tc superconductor. The reactivity characteristics of bulk and thin film samples of Y1-zCazBa2-yLayCu3O 7-δ indicate that the corrosion resistance in water environments increases with increasing degree of cation substitution up to z=y=0.4. The composition of Y0.6Ca0.4Ba1.6La0.4Cu 3O6.96 with a Tc of 80 K is found to be at least 100 times more stable than YBa2Cu3O6.94. Possible contributing factors that could be responsible for the marked improvement in the corrosion resistance of this high-Tc phase are discussed.

Original languageEnglish (US)
Number of pages1
JournalApplied Physics Letters
StatePublished - 1995

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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