F. Darmann et al., ELECTRICAL AND MAGNETIC-PROPERTIES OF INDIVIDUAL LAYERS OF FILAMENTS IN AG-SHEATHED BI-2223 TAPES, Superconductor science and technology (Print), 11(10), 1998, pp. 1024-1027
A technique has been developed to investigate the magnetic and electri
cal properties of individual layers of filaments in three-layer, close
-packed, 27-filament tapes. This has enabled the improvements to indiv
idual filaments resulting from various processing conditions to be exa
mined. The magnetic properties of each individual layer of filaments s
uggest that the second layer of filaments using the current processing
conditions is the best textured and aligned, with J(c) at 5 K of over
twice that of the outer layer.