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Microstructures of YBCO Thin Films Prepared by Pulsed Organometallic Beam Epitaxy

Published online by Cambridge University Press:  26 February 2011

J. G. Hu ,
D. J. Miller ,
D. B. Buchholz ,
S. J. Duray ,
D. Schulz ,
T. J. Marl  and
R. P. H. Chang
J. G. Hu
Affiliation:
Science & Technology Center for Superconductivity, Materials Science Division Argonne National Laboratory, Argonne, IL 60439
D. J. Miller
Affiliation:
Science & Technology Center for Superconductivity, Materials Science Division Argonne National Laboratory, Argonne, IL 60439
D. B. Buchholz
Affiliation:
Science & Technology Center for Superconductivity, Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208
S. J. Duray
Affiliation:
Science & Technology Center for Superconductivity, Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208
D. Schulz
Affiliation:
Science & Technology Center for Superconductivity, Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208
T. J. Marl
Affiliation:
Science & Technology Center for Superconductivity, Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208
R. P. H. Chang
Affiliation:
Science & Technology Center for Superconductivity, Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208
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Abstract

The microstructure of Y1Ba2Cu3Oy films and Y1Ba2Cu3Oy / Pr1Ba2Cu3Oy multilayers prepared by a pulsed organometallic beam epitaxy (POMBE) technique have been characterized by transmission electron microscopy (TEM). The microstructure of the films is observed to vary as a function of substrate temperature. At low temperatures, films are polycrystalline and exhibit some impurity phases. At higher substrate temperatures, films grow epitaxially with smooth surfaces and few impurities. Controlled growth at sufficiently high substrate temperatures allows uniform growth of alternating Y1Ba2Cu3Oy and Pr1Ba2Cu3Oy layers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 885
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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