Title :
Critical current measurements on Ag/Bi-Pb-Sr-Ca-Cu-O composite coils as a function of temperature and external magnetic field
Author :
Schwenterly, S.W. ; Lue, J.W. ; Lubell, M.S. ; Luton, J.N. ; Joshi, C.H.
Author_Institution :
Oak Ridge Nat. Lab., TN, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
Transport critical currents have been measured on two coils of high-temperature superconducting (HTSC) tape as a function of temperature and external magnetic field. The sample coil windings have inside and outside diameters of roughly 25 mm and 40 mm, respectively, and a length of 50 mm. They contain about 300 turns of filamentary Bi-Pb-Sr-Ca-Cu-O 2223 HTSC material sheathed in Ag to form a 0.18-mm by 2.54-mm tape, with a total length of about 30 m. Critical current results are reported for temperatures between 4.2 K and 90 K, in magnetic fields ranging up to 5.5 T.<>
Keywords :
bismuth compounds; calcium compounds; composite superconductors; critical currents; high-temperature superconductors; lead compounds; silver; strontium compounds; superconducting magnets; superconductive tunnelling; 0 to 5.5 T; 0.18 mm; 2.54 mm; 25 mm; 30 m; 4.2 to 90 K; 40 mm; 50 mm; Ag-BiPbSrCaCuO; coil windings; critical currents; external magnetic field; high temperature superconductivity; tape; temperature dependence; Critical current; Current measurement; High temperature superconductors; Magnetic field measurement; Magnetic materials; Superconducting coils; Superconducting filaments and wires; Superconducting films; Superconducting materials; Temperature distribution;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
