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In-Situ Pulsed Laser Deposition of High-TC Yba2Cu3O7 Superconducting Thin Films on (100) LaAlO3 Substrates

Published online by Cambridge University Press:  28 February 2011

P. Tiwari ,
S. Sharan ,
R. K. Singh ,
O. W. Holland  and
J. Narayan
P. Tiwari
Affiliation:
Department of Materials Science and Engineering North Carolina State University Raleigh, NC 27695‐7916
S. Sharan
Affiliation:
Department of Materials Science and Engineering North Carolina State University Raleigh, NC 27695‐7916
R. K. Singh
Affiliation:
Department of Materials Science and Engineering North Carolina State University Raleigh, NC 27695‐7916
O. W. Holland
Affiliation:
Solid State Division Oak Ridge National Laboratory OakRidge, TN 37831
J. Narayan
Affiliation:
Department of Materials Science and Engineering North Carolina State University Raleigh, NC 27695‐7916
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Abstract

The formation of superconducting thin films on lanthanum aluminate substrates is very important for high‐frequency applications. In this paper, we discuss the fabrication of epitaxial superconducting YBa2Cu3O7 thin films on (100)LaAlO3 substrates, which exhibit excellent dielectric properties required for high frequency applications. The films were deposited by the biased pulsed laser evaporation technique (PLE) at substrate temperatures between 500‐650°C and exhibit excellent crystallinity with best minimum ion channeling yields corresponding to approximately 3%. The superconducting transition temperatures varied from 88‐92 K with critical current densities at 77K and zero magnetic field greater than 4 ‐ 5 x 106 Amps/cm2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 451
Copyright
Copyright © Materials Research Society 1990

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References

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