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TlBaCaCuO and YBaCuO superconductor thin films via an electrodeposition process

Published online by Cambridge University Press:  31 January 2011

R.N. Bhattacharya ,
P.A. Parilla ,
A. Mason ,
L.L. Roybal ,
R.K. Ahrenkiel ,
R. Noufi ,
R.P. Hellmer ,
J.F. Kwak  and
D.S. Ginley
R.N. Bhattacharya
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
P.A. Parilla
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
A. Mason
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
L.L. Roybal
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
R.K. Ahrenkiel
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
R. Noufi
Affiliation:
Solar Energy Research Institute, Golden, Colorado 80401
R.P. Hellmer
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
J.F. Kwak
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
D.S. Ginley
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico 87185
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Abstract

Thin-film superconductors of TlBaCaCuO (TBCCO) and YBaCuO (YBCO) were fabricated via an electrodeposition process. The precursors of the superconducting TBCCO films were codeposited at a constant potential of −4 V onto a silver-coated SrTiO3 substrate. The YBCO precursors also were codeposited but under pulsed-potential conditions (in order to improve the film morphology) and onto a silver-coated MgO substrate. The pulsed-potential cycle consisted of 1 s at −4 V followed by 1 s at −1 V. The post-annealed TBCCO film showed zero resistance at about 102 K and critical current density at 76 K of 20 000 A/cm2 in zero magnetic field and 5000 A/cm2 in a 10 kOe field parallel to the film plane. The post-annealed YBCO film showed zero resistance at approximately 80 K and critical current density of 5160 A/cm2 at 4 K in zero magnetic field.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 6 , Issue 7 , July 1991 , pp. 1389 - 1392
Copyright
Copyright © Materials Research Society 1991

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References

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