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

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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.

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Authors and Affiliations

  1. Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland, 20899, USA

    Debra L. Kaiser & Marina Turchinskaya

  2. American Superconductor Corporation, Two Technology Drive, Westborough, Massachusetts, 01581, USA

    Gilbert N. Riley Jr. & Craig Christopherson

Authors
  1. Debra L. Kaiser
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  2. Marina Turchinskaya
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  3. Gilbert N. Riley Jr.
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  4. Craig Christopherson
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Kaiser, D.L., Turchinskaya, M., Riley, G.N. et al. Effect of filament architecture on magnetic flux distributions in multifilamentary (Bi, Pb)2Sr2Ca2Cu3Ox/Ag composites. Journal of Materials Research 12, 3074–3084 (1997). https://doi.org/10.1557/JMR.1997.0400

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  • DOI: https://doi.org/10.1557/JMR.1997.0400

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