Versatile new metalorganic process for preparing superconducting thin films

M. E. Gross, M. Hong, S. H. Liou, P. K. Gallagher, J. Kwo

Research output: Contribution to journalArticle

83 Scopus citations

Abstract

A new technique for producing thin films of the high-temperature perovskite superconductors, LnBa2Cu3O7-x, where Ln represents a rare-earth element, using spin-on metalorganic precursors is described. Pyrolysis of the spin-coated films, consisting of mixed metal (2-ethyl hexanoates), leads to black films up to several microns thick whose degree of orientation is a function of the processing temperature and duration. Representative films of YBa2Cu3O7-x on MgO begin to exhibit orientation with the c axis perpendicular to the film plane at heat treatments above 900°C. The superconducting behavior of a highly oriented film produced at 990°C is characterized by Tc(onset)=89 K, Tc(R=0)=77 K, and Jc=103 A cm -2 at 65 K.

Original languageEnglish (US)
Pages (from-to)160-162
Number of pages3
JournalApplied Physics Letters
Volume52
Issue number2
DOIs
StatePublished - Dec 1 1988

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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