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Oriented BSCCO thick film coatings on polycrystalline MgO

Published online by Cambridge University Press:  31 January 2011

J. R. Spann ,
L. E. Toth ,
I. K. Lloyd ,
M. Kahn ,
M. Chase ,
B. N. Das ,
T. L. Francavilla  and
M. S. Osofsky
J. R. Spann
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
L. E. Toth
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
I. K. Lloyd
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
M. Kahn
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
M. Chase
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
B. N. Das
Affiliation:
Composites and Ceramics Branch, Naval Research Laboratory, Washington, DC 20375
T. L. Francavilla
Affiliation:
Materials Physics Branch, Naval Research Laboratory, Washington, DC 20375
M. S. Osofsky
Affiliation:
Materials Physics Branch, Naval Research Laboratory, Washington, DC 20375
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Abstract

Highly oriented 2212 BSCCO thick films were prepared on polycrystalline MgO substrates using a melt/crystallization technique. Results compare very favorably with those on single crystal materials.1,2 The melting, quenching, and annealing processes were all found to be important in the development of a good microstructure and good superconducting properties. The best results (Jc ∼ 2000 A/cm2 at 64 K and 6000 A/cm2 at 4.2 K) were obtained on films which had been melted, quenched to room temperature, heated to 860°C where they were annealed before slow cooling to room temperature in oxygen, lightly polished, and reannealed at 860°C.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 6 , June 1990 , pp. 1163 - 1168
Copyright
Copyright © Materials Research Society 1990

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References

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