Title :
The Current Transport Properties of a 200 A-Class Bi-2223 Superconducting Wire at Various Temperatures and Magnetic Fields
Author :
Ayai, N. ; Kobayashi, S. ; Yamazaki, K. ; Yamade, S. ; Kikuchi, M. ; Ueno, E. ; Fujikami, J. ; Kato, T. ; Hayashi, K. ; Sato, K. ; Hata, R. ; Kitaguchi, H. ; Kumakura, H. ; Shimoyama, J.
Author_Institution :
Sumitomo Electr. Ind., Ltd., Osaka
fDate :
6/1/2007 12:00:00 AM
Abstract :
Silver-sheathed Bi-2223 multi-filamentary tapes using controlled-overpressure sintering have attained the highest critical current of 200 A-class at 77 K, self field. The 200 A-class Bi-2223 tape has been evaluated on the critical currents at various temperatures from 4.2 K to 90 K and magnetic fields up to 12 T applied perpendicularly to the tape plane. The critical currents are 500 A at 4.2 K, 5 T, 370 A at 20 K, 3 T and 200 A at 20 K, 10 T typically. This is an improvement by a factor of 1.3-1.5 compared to current commercial tapes produced using controlled-overpressure sintering.
Keywords :
bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; lead compounds; multifilamentary superconductors; silver; strontium compounds; superconducting tapes; 200 A-class Bi-2223 tapes; Bi-2223 superconducting wire; BiPbSr2Ca2Cu3O10-Ag - Interface; controlled-overpressure sintering; critical current; current 200 A; current 370 A; current 500 A; current transport properties; magnetic flux density 10 T; magnetic flux density 12 T; magnetic flux density 3 T; magnetic flux density 5 T; multifilamentary tapes; silver-sheathed Bi-2223 tapes; temperature 4.2 K to 90 K; temperature 77 K; Critical current; Current density; High temperature superconductors; Magnetic fields; Magnetic levitation; Magnetic properties; Magnetic separation; Nitrogen; Superconducting filaments and wires; Superconducting films; Bismuth; current density; high-temperature superconductors; superconducting tapes;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.897941
