DocumentCode
1498998
Title
The critical current of NbTi multifilamentary wire: a comparison between critical current densities using AC magnetization techniques ( J CM) and DC transport measurement (J CT ) throughout the superconducting phase
Author
Hampshire, D.P. ; Larbalestier, D.C.
Author_Institution
Appl. Superconductivity Center, Wisconsin Univ., Madison, WI, USA
Volume
25
Issue
2
fYear
1989
fDate
3/1/1989 12:00:00 AM
Firstpage
1956
Lastpage
1959
Abstract
AC magnetization measurements are presented for transverse field orientation on a NbTi standard reference material supplied by the National Bureau of Standards. These data, generated in DC background fields for the range 0<B <10 T, and 4.2 K<T <T c, are interpreted using the Bean-Campbell analysis to determine the critical current density (J cm) throughout the superconducting phase. An estimate of the electric field criterion at which transport critical current (J ct) measurements must be compared with J cm is determined. Good agreement is obtained for the field and temperature dependence of the critical current using these complementary techniques
Keywords
composite superconductors; critical current density (superconductivity); electrical conductivity of crystalline metals and alloys; fibre reinforced composites; magnetisation; niobium alloys; titanium alloys; type II superconductors; AC magnetization; Bean-Campbell analysis; DC transport; NbTi multifilamentary wire; critical current; critical current densities; electric field criterion; field dependence; superconducting phase; temperature dependence; transverse field orientation; Critical current; DC generators; Magnetic field measurement; Magnetic materials; Magnetization; Measurement standards; NIST; Niobium compounds; Titanium compounds; Wire;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.92691
Filename
92691
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