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The influence of processing conditions on the structure and critical properties of Bi-2223 composite tapes

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8 Author(s)
A. K. Shikov ; SSC All-Russia Sci. & Res. Inst. of Inorg. Mater., Moscow, Russia ; D. B. Gusakov ; D. N. Rakov ; V. A. Vargin
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SEM, XRD-data, and critical properties are presented which concern to Bi-2223 composite tapes processed under various conditions. The multifilamentary tapes were made by the PIT procedure with using of extrusion and/or drawing and tape rolling. Initial properties of powder precursors, filling factor, tape rolling, and heat treatment conditions as well as O2-content in working atmosphere were varied. The achieved critical properties are described and analyzed. In particular, on basis of XRD-data significant differences in Bi-2223 grains substructure for tapes having different levels of critical current have been revealed.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:15 ,  Issue: 2 )