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Nondestructive magneto-optical imaging analysis of superconducting (Bi, Pb)2Sr2Ca2Cu3Ox composites

Published online by Cambridge University Press:  31 January 2011

M. Turchinskaya ,
D. L. Kaiser ,
A. J. Shapiro ,
G. N. Riley Jr.  and
C. Christopherson
M. Turchinskaya
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
D. L. Kaiser
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
A. J. Shapiro
Affiliation:
Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
G. N. Riley Jr.
Affiliation:
American Superconductor Corporation, Two Technology Drive, Westborough, Massachusetts 01581
C. Christopherson
Affiliation:
American Superconductor Corporation, Two Technology Drive, Westborough, Massachusetts 01581
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Abstract

The superconducting filaments in (Bi, Pb)2Sr2Ca2Cu3Ox/Ag composite tapes have been imaged directly through the outer silver sheath of an unpolished tape by means of a magneto-optical imaging technique. The images reveal the morphology and alignment of the uppermost layer of filaments located as much as 112 μm below the unpolished tape surface, the depths of these filaments, and the homogeneity of the magnetic flux distribution within these filaments. These results demonstrate that the magneto-optical technique is a valuable nondestructive tool for analyzing (Bi, Pb)2Sr2Ca2Cu3Ox composite tapes.

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Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 7 , July 1996 , pp. 1597 - 1600
Copyright
Copyright © Materials Research Society 1996

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References

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