Title :
High critical current densities in long lengths of mono- and multifilamentary Ag-sheathed Bi(2223) tapes
Author :
Marti, F. ; Grasso, G. ; Huang, Y. ; Flukiger, R.
Author_Institution :
Dept. de Phys. de la Matiere Condensee, 24 Quai Ernest-Ansermet, Geneve, Switzerland
fDate :
6/1/1997 12:00:00 AM
Abstract :
By optimizing the tape fabrication process, high critical current densities over long length (up to 25 m) of Bi,Pb(2223) Ag-sheathed tapes were reproducibly obtained. The critical current densities of multifilamentary tapes (up to 55 filaments) are typically in the range of 25-30 kA/cm/sup 2/. At 77 K, up to 35 kA/cm/sup 2/ were recently measured for a monofilamentary tape of 0.5 m length. Detailed measurements of the transport properties of these tapes as well as of test pancakes and currents leads will be presented.
Keywords :
bismuth compounds; calcium compounds; critical current density (superconductivity); lead compounds; multifilamentary superconductors; silver; strontium compounds; superconducting tapes; 0.5 m; 25 m; 77 K; Ag-Bi/sub 2-x/Pb/sub x/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub y/ sheathed tapes; Bi/sub 2/PbSr/sub 2/Ca/sub 2/Cu/sub 3/O-Ag; critical current density; monofilamentary tapes; multifilamentary tapes; test pancakes; transport properties; Critical current; Critical current density; Current measurement; Fabrication; Magnetic field measurement; Nitrogen; Shape; Silver; Temperature; Wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
