Title :
Hysteresis in transport critical-current measurements of oxide superconductors
Author :
Goodrich, L.F. ; Stauffer, T.C.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
We have investigated hysteresis in transport critical-current (I c) measurements of Ag-matrix (Bi,Pb)2Sr2-Ca2Cu3O10-x (Bi-2223) and AgMg-matrix Bi2Sr2CaCu2 O8+x (Bi-2212) tapes. Ic hysteresis causes measurements with field, angle, and temperature sweeps to be multi-valued. Which value is correct is addressed in the context that the proper sequence of measurement conditions reflects the application conditions. Hysteresis in angle-sweep and temperature-sweep data is related to field-sweep hysteresis
Keywords :
bismuth compounds; calcium compounds; critical currents; high-temperature superconductors; hysteresis; lead compounds; magnesium alloys; silver; silver alloys; strontium compounds; superconducting tapes; Ag-(BiPb)2Sr2Ca2Cu3O 10; Ag-matrix (Bi,Pb)2Sr2-Ca2Cu3O10-x tapes; AgMg-matrix Bi2Sr2CaCu2O8+x tapes; Bi-2212 tapes; Bi-2223 tapes; Bi2Sr2CaCu2O8-AgMg; Ic; Ic hysteresis; angle-sweep; field-sweep hysteresis; hysteresis; oxide superconductors; temperature-sweep; transport critical-current; Conductors; Critical current; Current measurement; Goniometers; High temperature superconductors; Magnetic field measurement; Magnetic hysteresis; NIST; Superconducting magnets; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
