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Formation of thin film YBaCuO Superconductors from Cu/BaO/Y2O3 Layer Structures

Published online by Cambridge University Press:  28 February 2011

Chin-An Chang ,
C. C. Tsuei ,
C. C. Chi ,
M. R. Scheuermann ,
D. S. Yee  and
J. P. Berosh
Chin-An Chang
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
C. C. Tsuei
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
C. C. Chi
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
M. R. Scheuermann
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
D. S. Yee
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
J. P. Berosh
Affiliation:
IBM T. J. Watson Research Center, Yorktown Heights N. Y. 10598
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Abstract

Thin film superconductors of the YBaCuO family have been fabricated using layer structures of Cu/BaO/Y2O3 deposited by electron-beam evaporation. Using layer thicknesses off the stoichiometric YBa2Cu3O7, we have formed superconducting films with zero resistance above 77°K using MgO and SrTiO3 substrates. The films were found to be composed of both the superconducting YBa2Cu3O7 phase, and the non-superconducting green Y2BaCuO7 phase. Dependence of transition temperatures on the annealing temperatures and the substrates has also been studied.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 315
Copyright
Copyright © Materials Research Society 1988

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References

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