Title :
Critical currents in Bi-Sr-Ca-Cu-O superconductors up to 33 T at 4.2 K
Author :
Weijers, H.W. ; Haken, B. Ten ; ten Kate, H.H.J. ; Schwartz, J.
Author_Institution :
Nat. High Magnetic Field Lab., Tallahassee, FL, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
The I-V curves of Bi-Sr-Ca-Cu-O superconductors were measured in DC magnetic fields, oriented both parallel and perpendicular to the tape surface, up to 33 T, 4.2 K, in resistive magnets at the National High Magnetic Field Laboratory. This paper presents the experimental set-up, results of critical current measurements, and an analysis of the obtained Ic(B) curves in terms of strongly and weakly linked current paths. A distinct double-step behavior is observed for field perpendicular to the tape surface. The scaling behavior of the applied field with its component perpendicular to the ab-plane, and the implied average grain-misalignment angle, is investigated
Keywords :
bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; strontium compounds; superconducting tapes; 33 T; 4.2 K; Bi-Sr-Ca-Cu-O; DC magnetic fields; I-V curves; critical currents; double-step behavior; grain-misalignment angle; high Tc superconductors; perpendicular field; scaling behavior; Boring; Conductors; Copper; Helium; High temperature superconductors; Lead; Magnetic field measurement; Magnets; Nuclear magnetic resonance; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
