Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields

T. Tateiwa, Y. Sazuka, H. Fujishiro, H. Hayashi, T. Nagafuchi, Tetsuo Oka

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A rectangular-shaped GdBaCuO bulk (33 × 33 × 20 mm 3) has been magnetized by pulse fields with various strengths from B ex = 3 T to 7 T at 44 K and 20 K. The time dependences of the local fields and temperatures have been measured at five positions on the bulk surface. The flux movement, flux trapping and the heat generation are closely related for lower applied fields, i.e., the temperature rise is larger at the specified positions, where a large number of magnetic fluxes are trapped. The heat generation is mainly due to the pinning loss in this condition. The maximum trapped field B T = 4.0 T can be realized on the bulk surface by a modified multi-pulse technique with stepwise cooling (MMPSC) method, on which B T reaches only 2.5 T at 20 K for a single pulse application.

Original languageEnglish
Pages (from-to)398-401
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 2007 Oct 1
Externally publishedYes

Fingerprint

Heat generation
high temperature superconductors
heat generation
Flux pinning
Magnetic flux
pulses
Fluxes
Cooling
Temperature
time dependence
temperature
magnetic flux
trapping
cooling

Keywords

  • MMPSC method
  • Pulse field magnetization
  • Rectangular-shaped bulk
  • Temperature rise
  • Trapped field

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields. / Tateiwa, T.; Sazuka, Y.; Fujishiro, H.; Hayashi, H.; Nagafuchi, T.; Oka, Tetsuo.

In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 398-401.

Research output: Contribution to journalArticle

Tateiwa, T. ; Sazuka, Y. ; Fujishiro, H. ; Hayashi, H. ; Nagafuchi, T. ; Oka, Tetsuo. / Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields. In: Physica C: Superconductivity and its Applications. 2007 ; Vol. 463-465, No. SUPPL. pp. 398-401.
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