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Effect of processing parameters on superconducting properties of Ag-sheathed Bi-2223 tape

✍ Scribed by K Venugopal; G Swaminathan

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
311 KB
Volume
34
Category
Article
ISSN
0011-2275

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✦ Synopsis

Silver-sheathed tapes were fabricated using a Bi-2223 system. The tapes were processed to their final thickness by direct rolling as well as by repeated rolling with intermediate heat treatment. The rolling reduction rate was also varied to find its effect on the final properties. The critical current Jc measured at 77 K could be enhanced to 12500Acm -2 for repeatedly rolled tapes from 2770Acm -2 obtained in directly rolled tapes processed under identical conditions. In repeatedly rolled tapes the Jc-B variations were found to be much lower in comparison to the directly rolled tapes. Texture evaluation using the angular dependence of the magnetoresistance showed the a-b plane orientation to be along the rolling direction.

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