IEEJ Transactions on Fundamentals and Materials
Online ISSN : 1347-5533
Print ISSN : 0385-4205
ISSN-L : 0385-4205
Bi-Based Oxide Superconducting Current Lead and its Application
Yutaka YamadaKazuo WatanabeJunji SakurabaMamoru IshiharaHiroyuki Mori
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1995 Volume 115 Issue 3 Pages 302-307

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Abstract
We applied the Bi-based oxide superconducting bulk to the current leads in a cryocooler-cooled superconducting magnet which is free from liquid helium in operation. The magnet is capable of generating a steady magnetic field of 4T at a current of 400A in room-temperature 38mm diameter bore.
Here we have investigated superconducting properties of Bi-based oxide bulk fablicated by intermediate cold isostatic pressing process. The bulk has a composition of (Bi+Pb): Sr:Ca:Cu=2:2:2:3 and is utilized in the form of thin-walled sintered cylindrical tube. The transport critical current density and critical current of the bulk at 77K under self-magnetic field are more than 1000A/cm2 and 1100A, respectively.
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