Resin-impregnated bulk RE-Ba-Cu-O current leads for the superconducting magnet on maglev train

M. Tomita, K. Nagashima, T. Herai, M. Murakami

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Bulk RE-Ba-Cu-O (RE: rare earth elements) superconductors exhibit high critical current density (Jc) and low thermal conductivity, that are the characteristics desired for the current lead applications. In this study, we studied whether the resin-impregnated Y-Ba-Cu-O rods can be used as the current lead for the superconducting magnet on a magnetically levitated train. The fatigue test showed that the mechanical properties of resin-impregnated Y-Ba-Cu-O rods are sufficiently good for maglev applications. We could also pass the electric currents of 500 A without heat generation. This was further confirmed by field distribution measurements, which showed that the superconducting state of the current lead was well maintained when the currents of 500 A were passed.

Original languageEnglish
Pages (from-to)1216-1220
Number of pages5
JournalPhysica C: Superconductivity and its applications
Issue numberPART 2
Publication statusPublished - 2002 Aug
Externally publishedYes


  • Bulk
  • Current lead
  • Epoxy resins
  • Mechanical strength
  • Superconductor
  • Trapped magnetic field

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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