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Fabrication of high Tc Superconducting Films with Diffusion Barriers

Published online by Cambridge University Press:  28 February 2011

C. T. Ghien ,
Gang Xiao ,
M. Z. Cieplak ,
A. Bakhshai ,
A. Gavrin ,
F. H. Streitz  and
J. Childress
C. T. Ghien
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
Gang Xiao
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
M. Z. Cieplak
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
A. Bakhshai
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
A. Gavrin
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
F. H. Streitz
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
J. Childress
Affiliation:
Department of Physics and Astronomy The Johns, Hopkins University Baltimore, Maryland 21218
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Extract

Superconducting YBa2Cu3O; thin films have been prepared by magnetron sputtering onto [100] single crystal MgO with and without an Au buffer layer. All samples show high transition temperatures (82–87 K). The use of an Au buffer layer significantly improves the superconducting properties, particularly the Meissner effect and critical current density (3.3×106A/cm2 at 2 K and 3.5×104A/cm2 at T=77 K). The Au buffer layers remain metallic after high temperature annealing in an oxygen atmosphere, and may thus serve as effective current shunts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 99: Symposium AA – High-Temperature Superconductors , 1987 , 311
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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