Abstract
Abstract Long lengths of silver-clad (Bi,Pb) 2 Sr 2 Ca 2 Cu 3 O 10 (Bi2223) high- T c multifilamentary tapes were produced using the powder-in-tube (PIT) technique followed by a thermomechanical process. The relationships between microstructure and electrical, magnetic and mechanical properties of the heat treated tape were evaluated from the critical current density measurements, irreversibility magnetic field determination and mechanical bending tests. Emphasis was stressed on the J c behavior in magnetic fields at different temperatures. A J c of 10,000 A/cm 2 at 77 K in a zero field for a 10 m tape and 75,000 A/cm 2 at 23 K in a field of 3 T for a short tape was achieved. The results obtained showed that Bi2223/Ag high- T c composite tapes are a potential alternative to conventional low- T c superconductors in magnetic levitation (MAGLEV) applications.
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