Experimental verification of the magnetic flux penetration property and flux flow inhibition effect of a superconducting bulk magnet with small holes

K. Yokoyama, T. Oka, N. Kondo, S. Hosaka

Research output: Contribution to journalConference article

3 Citations (Scopus)


We have proposed that GdBa2Cu3O7-x bulk material with small holes can easily be magnetized by pulsed-field magnetization. When the fundamental experiment of applying a single pulsed field with various amplitudes was carried out, the total magnetic flux sharply increased in a low applied field, and flux reduction caused by flux flow hardly occurred in a high applied field. In this paper, we investigate the cause of these effects by using trapped field distributions to calculate current densities in the regions with and without holes. The value of the region with holes was about 10% greater, implying that suppression of flux flow created enhancement of the current density by small holes.

Original languageEnglish
Pages (from-to)261-264
Number of pages4
JournalPhysics Procedia
Publication statusPublished - 2013 Jan 1
Event25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan
Duration: 2012 Dec 32012 Dec 5



  • Flux flow
  • Flux penetration
  • Pulsed-field magnetization
  • Small hole
  • Superconducting bulk magnet

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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