Fabrication of (Hg,Re)-Ba-Ca-Cu-O (1223) single phase fibers for current leads

We report the combination of two separately developed materials processing technologies which together have made possible the production of single pha se fibers of (Hg,Re)Ba-Ca-Cu-O ((Hg,Re)-1223), These fibers have shown T-c values of 132 K, irreversibility fields of 2.3 T at 77 K and I-c values as high as 10 A and 40 A at 77 and 4.2 K, respectively. One salient use of these fibers is their application to the HTS section of a resistive/superconducting hybrid current lead, Such an application offers greater system cooling efficiencies and the ability to operate in higher m agnetic fields then current leads based upon the more commonly used Y-Ba-Cu -O (123) and Bi-Sr-Ca-Cu-O (2223) compounds.