Title :
Anomalous magnetization behaviour in fine filamentary NbTi superconducting wires
Author :
Polak, M. ; Krempasky, L. ; Majoros, M. ; Suchon, D. ; Kirchmayr, H.
Author_Institution :
Inst. of Electr. Eng., Slovak Acad. of Sci., Bratislava, Czechoslovakia
fDate :
3/1/1993 12:00:00 AM
Abstract :
Magnetization curves of various fine filamentary superconducting wires with Cu as well as a CuNi matrix have been measured. Anomalies in the shape of these curves in a low external magnetic field were observed. A strong influence of both filament diameter and matrix type on the field above which the initial magnetization curve deviates from the straight line was detected. A considerable influence of the current flowing through the sample on the magnetization was observed as well. A model based on the proximity effect is proposed for the explanation of the magnetization anomalies.<>
Keywords :
composite superconductors; losses; magnetisation; niobium alloys; proximity effect; titanium alloys; type II superconductors; Cu; Cu-NiTi; CuNi; CuNi-NiTi; NbTi superconducting wires; filament diameter; fine filamentary superconducting wires; magnetization anomalies; magnetization curve; matrix type; model; proximity effect; Circuit testing; Coils; Current measurement; Hall effect devices; Length measurement; Magnetic field measurement; Magnetization; Niobium compounds; Superconducting filaments and wires; Titanium compounds;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
