Magnetic properties of melt-processed large single domain Gd-Ba-Cu-O bulk superconductor 140 mm in diameter

Naomichi Sakai, S. Nariki, K. Nagashima, Muralidhar Miryala, Masato Murakami, I. Hirabayashi

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We have studied magnetic properties of a single grain Gd-Ba-Cu-O bulk superconductor 140 mm in diameter. The distribution of the trapped magnetic field showed that the sample was a single domain without serious weak links. The maximum trapped magnetic field at 65 K was 3.66 T, when the bulk was field-cooled in 4 T. From the distribution measurements of the trapped magnetic field, it was confirmed that a large amount of flux could be trapped in a large grain superconductor. In addition, the magnetic field could reach a longer distance in a large bulk compared to smaller samples. The repulsive force measurements also showed that the repulsive force density of the larger bulk was much larger than those of smaller samples.

Original languageEnglish
Pages (from-to)305-309
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume460-462 I
Issue numberSPEC. ISS.
Publication statusPublished - 2007 Sep 1



  • Large bulk
  • RE123
  • Repulsive force
  • Superconductor
  • Trapped field

ASJC Scopus subject areas

  • Condensed Matter Physics

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