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Effect of filament architecture on magnetic flux distributions in multifilamentary (Bi, Pb)2Sr2Ca2Cu3Ox/Ag composites

Published online by Cambridge University Press:  31 January 2011

Debra L. Kaiser ,
Marina Turchinskaya ,
Gilbert N. Riley Jr.  and
Craig Christopherson
Debra L. Kaiser
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Marina Turchinskaya
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
Gilbert N. Riley Jr.
Affiliation:
American Superconductor Corporation, Two Technology Drive, Westborough, Massachusetts 01581
Craig Christopherson
Affiliation:
American Superconductor Corporation, Two Technology Drive, Westborough, Massachusetts 01581
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Abstract

Multifilamentary (Bi, Pb)2Sr2Ca2Cu3Ox/Ag composites have been studied by a nondestructive magneto-optical imaging technique in order to determine the effect of filament architecture on the local magnetic flux distribution. The images reveal the homogeneity of the flux distribution in the upper layer filaments under magnetizing and demagnetizing conditions, and the alignment and morphology of these filaments in tapes with nine different composite structures. Certain types of filament arrangements led to homogeneous flux distributions, while other types caused localized inhomogeneities in the flux distribution. Nonuniform filament thickness also resulted in a highly inhomogeneous flux distribution. These results are useful in selecting optimal composite structures for power applications.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 11 , November 1997 , pp. 3074 - 3084
Copyright
Copyright © Materials Research Society 1997

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