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

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

3956

Lastpage

3959

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 I_c(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 T_c superconductors; perpendicular field; scaling behavior; Boring; Conductors; Copper; Helium; High temperature superconductors; Lead; Magnetic field measurement; Magnets; Nuclear magnetic resonance; Superconductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919945

Filename

919945