Title :
Flux motion studies by means of temperature measurement in magnetizing processes for HTSC bulks
Author :
Fujishiro, Hiroyuki ; Oka, Tetsuo ; Yokoyama, Kazuya ; Kaneyama, Masahiko ; Noto, Koshichi
Author_Institution :
Fac. of Eng., Iwate Univ., Morioka, Japan
fDate :
6/1/2004 12:00:00 AM
Abstract :
The temperature rises ΔT(t) of cryo-cooled SmBaCuO bulk superconductor have been measured after applying the pulse magnetic field from Bex = 3.01 to 5.42 T for various initial stage temperatures (Ts = 40 K ∼ 70 K). For each Ts and Bex, the observed systematic change of ΔT and the trapped magnetic field BT can be explained in terms of the diagram of the maximum temperature measured at the bulk center surface (T0max) vs. BT. The maximum temperature rise ΔTmax decreases with increasing Ts under the identical Bex.
Keywords :
barium compounds; flux flow; high-temperature superconductors; magnetic flux; magnetisation; samarium compounds; temperature measurement; viscosity; 3.01 to 5.42 T; 40 to 70 K; HTSC bulks; SmBaCuO; bulk center surface; cryo-cooled bulk superconductor; flux motion; high Tc bulk superconductor; magnetizing processes; pinning loss; pulse field magnetizing; pulse magnetic field; temperature measurement; temperature rise; trapped magnetic field; viscous loss; Epoxy resins; Magnetic field measurement; Magnetic fields; Magnetic flux; Magnetic separation; Magnetostatics; Powders; Pulse measurements; Superconducting magnets; Temperature measurement; High $T_rm c$ bulk superconductors; pinning and viscous loss; pulse field magnetizing; temperature measurement;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2004.830392
