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Fabrication of high-critical current density Yba2Cu3O7−δ films using a fluorine-free sol gel approach

Published online by Cambridge University Press:  31 January 2011

Y. Xu ,
A. Goyal ,
N. A. Rutter ,
D. Shi ,
M. Paranthaman ,
S. Sathyamurthy ,
P. M. Martin  and
D. M. Kroeger
Y. Xu
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, and Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221
A. Goyal*
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
N. A. Rutter
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
D. Shi
Affiliation:
Department of Materials Science and Engineering, University of Cincinnati, Cincinnati, Ohio 45221
M. Paranthaman
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
S. Sathyamurthy
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
P. M. Martin
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
D. M. Kroeger
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
*
a)Address all correspondence to this author at Bethel Valley Road, P.O. Box 2008 Oak Ridge, TN 37831-6116. e-mail: goyala@ornl.gov
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Abstract

Superconducting Yba2Cu3O7−δ (YBCO) films with critical transition temperature Tc(0) of 90 K were fabricated via a fluorine-free, metal trimethylacetate based sol-gel route. Precursor films were spin-coated onto single-crystal (001) LaAlO3 (LAO) and (001) SrTiO3 (STO) substrates. Optimization of the burnout process resulted in films with excellent out-of-plane and in-plane texture. Transport critical current densities, Jc, of 1.6 and 1.1 MA/cm2 were obtained at 77 K in self-field on films grown on LAO and STO substrates, respectively. This is the first demonstration of high-Jc YBCO film fabrication using a fluorine-free, ex-situ process.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 3 , March 2003 , pp. 677 - 681
Copyright
Copyright © Materials Research Society 2003

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References

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