Effects of complex processings on critical current density of Bi-2223 tapes

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Abstract
Some long-length Bi(Pb)-2223 tapes produced using the PIT technique and multilayered structure technique have been developed for an industrial material for which the requirement is the class at 77.3 K in long-length wires. For this purpose, we have achieved recent progress in performance, such as reproducibility of the class at 77.3 K and low magnetic fields for long-length tapes having sound filaments, overall critical current density of in a low silver:superconductor ratio tape, allowable strength of more than 100 MPa using silver alloy sheath and low AC loss of less than in kA class conductors using twisted wires.

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