Effect of Solidification Conditions on Partial Melt Processed Bi2212/Ag Round Wire

In this study, we report the effect of cooling from the peak temperature reached during partial melt processing on the critical current for a Bi2212/Ag wire. A single-stage cooling approach is compared to two-stage cooling. For two-stage cooling, the first stage cooling rate and the cooling rate transition temperature were varied to investigate the effects of undercooling on the solidification behavior of the 2212 phase. Two-stage cooling results in higher I
_c
compared to single-stage cooling, and the cooling rate transition temperature was found to have a greater effect on I
_c
than the initial cooling rate.