HOMOGENEOUS PHASE DISTRIBUTION IN AG-DOPED (PB,BI)2223 ALLOY SHEATHEDTAPES

The local 2223 phase evolution was studied by XRD analysis in alloy an d Ag sheathed tapes. It has been previously shown that Ag-sheathed tap es generally have a maximum amount of 2223 phase at the core-sheath in terface and a minimum at the centre of the core[1]. In this paper, we show that the combination of an alloy sheath and the addition of Ag 15 %wt in the EDS (Evaporative Decomposition of Solution) precursor powde r results in a homogeneous distribution of the 2223 phase in the core.