Title :
Fast healing of deformation-induced damage in Ag/Bi-2223 tapes
Author :
Polyanskii, A. ; Beilin, V.M. ; Yashchin, E. ; Goldgirsh, A. ; Roth, M. ; Larbalestier, D.
Author_Institution :
Appl. Supercond. Center, Wisconsin Univ., Madison, WI, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
Critical current, magneto-optical (MO) images and ac susceptibility of Ag/BSCCO-2223 tapes were studied at various stages of tape processing. It was found that long-range connectivity of the tape core destroyed by intermediate deformation was restored in less than 1 h of subsequent sintering. Transverse flux penetration observed in MO images of sintered tapes are supposedly weak link channels remaining at locations of unhealed or only partially healed deformation-induced cracks
Keywords :
bismuth compounds; calcium compounds; cracks; critical currents; high-temperature superconductors; lead compounds; magnetic susceptibility; magneto-optical effects; penetration depth (superconductivity); plastic deformation; silver; sintering; strontium compounds; superconducting tapes; (BiPb)2Sr2Ca2Cu3O 10-Ag; 1 h; Ag/BSCCO-2223 tapes; Ag/Bi-2223 tapes; ac susceptibility; critical current; deformation-induced damage; fast healing; intermediate deformation; long-range connectivity; magneto-optical images; partially healed deformation-induced cracks; sintered tapes; sintering; tape core; tape processing; transverse flux penetration; weak link channels; Bismuth compounds; Critical current; Critical current density; Image restoration; Magnetic cores; Magnetic field measurement; Magnetic susceptibility; Magnetooptic effects; Silver; Telephony;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
