Bi-2223/Ag- and /Ag-alloy tapes: fabrication and physical properties

摘要

In this work we present some results from efforts to improve the properties of the tapes with respect to AC-losses (matrix resistivity) and mechanical load. Critical currents of multifilamentary tapes differing in matrix, sheath material and filament number have been measured at T = 4 K in magnetic fields up to 10 T and the critical current of long lengths has been measured at T = 77 K.