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Electrical Transport Dissipation Effects in Epitaxial Y1ba2cu3o7.X Thin Films

Published online by Cambridge University Press:  28 February 2011

D. K. Christen ,
C. E. Klabunde ,
R. Feenstra ,
D. H. Lowndes ,
D. Norton ,
H. R. Kerchner ,
J. R. Thompson ,
S. T. Sekula ,
J. D. Budai  and
L. A. Boatner
...Show all authors
D. K. Christen
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
C. E. Klabunde
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
R. Feenstra
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
D. H. Lowndes
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
D. Norton
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
H. R. Kerchner
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
J. R. Thompson
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061 University of Tennessee, Knoxville, TN 37996‐1200
S. T. Sekula
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
J. D. Budai
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
L. A. Boatner
Affiliation:
Oak Ridge National Laboratory, Solid State Division, Oak Ridge, TN 37831‐6061
J. Narayan
Affiliation:
North Carolina State University, Raleigh, NC 27695
R. Singh
Affiliation:
North Carolina State University, Raleigh, NC 27695
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Abstract

The electrical transport properties of a series of Y1Ba2Cu307.x thin films deposited onto single crystal substrates by thermal coevaporation and laser ablation were investigated. For fully epitaxial, c‐oriented films on (001) substrate surfaces, the critical current density Jc showed large high‐field enhancements for the film aligned with H parallel to the copper‐oxygen planes. With H||c, a precipitous decay of Jc with increasing field is described by thermally activated flux motion. Films on (110) SrTiO3 substrates were comprised of finely‐divided arrays of grains having [110], and <103>‐type orientations, and exhibited granular behavior. For these “triaxial” films, the transport dissipation was also thermally activated but with much smaller energy barriers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 883
Copyright
Copyright © Materials Research Society 1990

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References

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