MEASUREMENTS OF THE SELF-FIELD LIMITATIONS OF THE CRITICAL-CURRENT INBI-2223 SUPERCONDUCTIVE BARS

Authors
LOBERG B NISKA J RUBIN P
Citation
B. Loberg et al., MEASUREMENTS OF THE SELF-FIELD LIMITATIONS OF THE CRITICAL-CURRENT INBI-2223 SUPERCONDUCTIVE BARS, Applied superconductivity, 1(10-12), 1993, pp. 1757-1762
Citations number
8
Categorie Soggetti
Material Science","Physics, Applied","Physics, Condensed Matter
Journal title
Applied superconductivity → ACNP
ISSN journal
09641807
Volume
1
Issue
10-12
Year of publication
1993
Pages
1757 - 1762
Database
ISI
SICI code
0964-1807(1993)1:10-12<1757:MOTSLO>2.0.ZU;2-H
Abstract
The problem of relatively low I(c) values in large bulk specimens of t he Bi-2223 superconductor has been investigated at 77K. Superconductiv e bars of the Bi-2223 phase with varying geometries have been prepared and tested with critical currents reaching several hundreds of ampere s. The best specimens show a good correlation between the self-field g enerated and the critical current flowing in specimen. A self-field of about 7 A/mm appears to be a design limitation for the use of this ma terial in the bulk form. Minimization of the self-field by the proper choice of bar geometry can be used to get high I(c) and J(c) specimens .