Magnetization measurements on multifilamentary No/sub 3/Sn and NbTi conductors
The effective filament size has been determined for a number of high current Nb/sub 3/Sn multifilamentary composites. In most cases it is much larger than the nominal filament size. For the smallest filaments (..integral.. 1 micron) the effective size can be as much as a factor of forty times the nominal size. Samples made by the ''internal tin'', ''bronze route'', and ''jelly roll'' methods have been examined with filaments in the range one to ten microns. Rate dependent magnetization and ''flux'' jumping'' have been observed in some cases. NbTi composites ranging in filament size from nine to two hundred microns and with copper to super-conductor ratios between 1.6:1 and 7:1 have been examined in the same apparatus. Low field ''flux jumping'' was only observed in conductors with very large filaments and relatively little stabilizing copper.
- Research Organization:
- Brookhaven National Laboratory, Upton, NY
- OSTI ID:
- 6484814
- Report Number(s):
- CONF-840937-
- Journal Information:
- IEEE Trans. Magn.; (United States), Vol. MAG 21:2; Conference: Applied superconductivity conference, San Diego, CA, USA, 9 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
36 MATERIALS SCIENCE
NIOBIUM ALLOYS
MAGNETIZATION
SUPERCONDUCTING WIRES
FABRICATION
TIN ALLOYS
TITANIUM ALLOYS
COMPOSITE MATERIALS
COPPER ADDITIONS
CRITICAL CURRENT
FILAMENTS
MAGNETIC FLUX
MEASURING INSTRUMENTS
MEASURING METHODS
SIZE
STABILIZATION
ALLOYS
COPPER ALLOYS
CURRENTS
ELECTRIC CURRENTS
MATERIALS
WIRES
420201* - Engineering- Cryogenic Equipment & Devices
360101 - Metals & Alloys- Preparation & Fabrication