Title :
Transport and magnetic properties of Ag-sheathed Bi-2223 tapes
Author :
Reissner, Michael ; Hadaier, Gerhard ; Steiner, Walter ; Fuchs, Gunter ; Gladun, Alexander ; Fischer, Klaus
Author_Institution :
Inst. fur Angewandte und Tech. Phys., Wien Univ., Austria
fDate :
3/1/1994 12:00:00 AM
Abstract :
Bi-2223 tapes were investigated by transport and magnetic measurements. Two different regimes concerning the field dependence of the critical current density Jc are obtained. At T⩾6 K J c follows an exponential law. From analysis of magnetic relaxation measurements by means of distributions of activation energies an explanation of the low temperature behaviour of Jc, in terms of a change in pinning behaviour is possible
Keywords :
bismuth compounds; calcium compounds; composite superconductors; critical current density (superconductivity); flux pinning; high-temperature superconductors; magnetic relaxation; silver; strontium compounds; 6 K; Ag-BiSrCaCuO; Ag-sheathed Bi-2223 tapes; activation energies; critical current density; exponential law; field dependence; low temperature behaviour; magnetic properties; magnetic relaxation measurements; pinning behaviour; transport measurements; Creep; Critical current density; Magnetic analysis; Magnetic field measurement; Magnetic hysteresis; Magnetic moments; Magnetic properties; Magnetic variables measurement; Performance evaluation; Temperature dependence;
Journal_Title :
Magnetics, IEEE Transactions on
