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

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

1054

Lastpage

1057

Abstract

The temperature rises ΔT(t) of cryo-cooled SmBaCuO bulk superconductor have been measured after applying the pulse magnetic field from B_ex = 3.01 to 5.42 T for various initial stage temperatures (T_s = 40 K ∼ 70 K). For each T_s and B_ex, the observed systematic change of ΔT and the trapped magnetic field B_T can be explained in terms of the diagram of the maximum temperature measured at the bulk center surface (T⁰_max) vs. B_T. The maximum temperature rise ΔT_max decreases with increasing T_s under the identical B_ex.

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 T_c 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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.830392

Filename

1324976