Title :
Fabrication of (Hg,Re)-Ba-Ca-Cu-O (1223) single phase fibers for current leads
Author :
Sastry, P.V.P.S.S. ; Viouchkov, Y. ; Hodges, R.G.L. ; Schwartz, J.
Author_Institution :
Nat. High Magnetic Field Lab., Florida State Univ., Tallahassee, FL, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We report the combination of two separately developed materials processing technologies which together have made possible the production of single phase fibers of (Hg,Re)Ba-Ca-Cu-O ((Hg,Re)-1223). These fibers have shown Tc values of 132 K, irreversibility fields of 2.3 T at 77 K and Ic 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 magnetic fields than current leads based upon the more commonly used Y-Ba-Cu-O (123) and Bi-Sr-Ca-Cu-O (2223) compounds
Keywords :
barium compounds; calcium compounds; critical current density (superconductivity); fibres; high-temperature superconductors; materials preparation; mercury compounds; rhenium compounds; superconducting cables; superconducting critical field; superconducting transition temperature; (Hg,Re)-1223; (Hg,Re)Ba2Ca2Cu3O; (HgRe)Ba2Ca2Cu3O; 10 A; 132 K; 2.3 T; 4.2 K; 40 A; 77 K; HTS; Ic value; Tc value; cooling efficiency; current leads; irreversibility field; materials processing; resistive/superconducting hybrid current lead; single phase fibers; Fabrication; High temperature superconductors; Lead; Magnetic fields; Polymers; Powders; Production; Solvents; Superconducting films; Superconducting magnets;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
