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Single buffer layers of LaMnO3 or La0.7Sr0.3MnO3 for the development of Yba2Cu3O7−δ-coated conductors: A comparative study

Published online by Cambridge University Press:  31 January 2011

T. Aytug ,
M. Paranthaman ,
H. H. Zhai ,
H. H. Christen ,
S. Sathyamurthy ,
D. D. Christen  and
R. R. Ericson
T. Aytug
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
M. Paranthaman
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
H. H. Zhai
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
H. H. Christen
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
S. Sathyamurthy
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
D. D. Christen
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
R. R. Ericson
Affiliation:
3M Company, St. Paul, Minnesota 55144
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Abstract

Single, epitaxial buffer layers of insulating LaMnO3 (LMO) or conductive La0.7Sr0.3MnO3 (LSMO) have been grown by sputter deposition on biaxially textured Ni and Ni–alloy substrates. We report baseline investigations of their compatibility with the Yba2Cu3O7−δ (YBCO) coatings and demonstrate biaxially textured YBCO films grown by pulsed-laser deposition on these single-buffered tapes. Superconducting property characterizations revealed better properties for YBCO films on LMO-buffered tapes relative to those grown on LSMO layers. Self-field critical current densities (Jc) exceeding 1 × 106 A/cm2 at 77 K have been obtained for the YBCO (200 nm) films on LMO-buffer layers. These results offer prospects for the use of single, LMO-buffered metal tapes in the development of practical YBCO-coated conductors.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 17 , Issue 9 , September 2002 , pp. 2193 - 2196
Copyright
Copyright © Materials Research Society 2002

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References

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