INFLUENTIAL FACTORS ON CRITICAL CURRENT DENSITY OF Ag-SHEATHED Bi-2223 TAPES

The silver-sheathed Bi-Pb-Sr-Ca-Cu-O(Bi-2223) superconducting tapes have been fabricated by the powder-in-tube method. In the process,we investigated the effects of the particle size, rolling and pressing on Jc and found that the Jc value can be a ffected greatly by the three factors.