The effect of magnetic impurities and barriers on the magnetization and critical current of fine filament NbTi composites [electronic resource].
- Upton, N.Y. : Brookhaven National Laboratory, 1987.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 4 : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- It has been shown that the highest critical currents in fine filament NbTi conductors are obtained when the filaments are closely spaced. However, the filaments in a composite with a high purity copper matrix tend to be coupled via the ''proximity effect'' as the filament spacing is reduced leading to large magnetization at low fields. To reduce the ''proximity'' coupling, trial billets of NbTi have been fabricated with Cu-30% Ni matrix, Cu-0.5% Mn matrix and one with a Ni barrier around the filaments. Wires drawn from these billets have shown that this interfilament coupling can be suppressed for very small filament separations. A full sized commercial billet with Cu-0.5% Mn matrix demonstrates that high J/sub c/ conductors with filament size approx.1 to 5 ..mu..m can be fabricated which show no interfilament coupling at low fields.
- Report Numbers:
- E 1.99:bnl-40543
E 1.99: conf-870901-23
- Published through SciTech Connect.
10. international conference on magnet technology (MT-10), Boston, MA, USA, 21 Sep 1987.
Sampson, W.B.; Gregory, E.; Ghosh, A.K.; Wong, J.; Kreilick, S.
- Funding Information:
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