Copper impurity in diffusion Nb3Sn tapes
- 21 April 1975
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 8 (8) , L129-L131
- https://doi.org/10.1088/0022-3719/8/8/005
Abstract
Nb3Sn tapes are prepared by the method of diffusion under high vacuum. Tapes are also prepared under identical conditions with copper impurity (0.5-45 at.%) added into the tin. The critical current of the Nb3Sn tapes, measured at 4.2K and in a magnetic field of 30 kOe, is found to increase with copper impurity by a factor of as much as 2 for 1 at.% copper. Further additions of copper, on the other hand, result in an almost logarithmic decrease of the critical current. The latter observation is in disagreement with previous results.Keywords
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