Extended measurements of the resistive critical current transition

Author

Narang, G. ; Warnes, W.H.

Author_Institution

Dept. of Mech. Eng., Oregon State Univ., Corvallis, OR, USA

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

1269

Lastpage

1272

Abstract

The resistive critical current transition has been measured in a variety of Nb-Ti wires over several decades in voltage. The measurements were made as a function of magnetic field for wires with a variety of processing conditions, leading to both intrinsic and extrinsic limitations to the critical current (I/sub c/). Measurements of the wire geometry by image analysis have been used to assess the extent of extrinsic limitation of I/sub c/ and to see if any correlation exists between the V(I) transition and the filament geometry. A weak correlation between the linear variation in the cross-sectional area of the filaments and the I/sub c/ distribution of the samples was observed.<>

Keywords

critical currents; niobium; superconducting transition temperature; titanium; type II superconductors; Nb-Ti wires; filament geometry; image analysis; resistive critical current transition; weak correlation; wire geometry; Conductivity; Critical current; Current measurement; Geometry; Magnetic field measurement; Shape; Superconducting filaments and wires; Superconducting integrated circuits; Superconducting materials; Voltage measurement;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233393

Filename

233393