Investigation of three-dimensional current distribution at silver diffusion joint of RE-123 coated conductors based on magnetic microscopy combined with finite element method

Kohei Higashikawa, Yoshihiro Honda, Masayoshi Inoue, Takanobu Kiss, Noriko Chikumoto, Naomichi Sakai, Teruo Izumi, Hiroshi Okamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Combining scanning Hall-probe microscopy (SHPM) with finite element method (FEM), we have investigated three-dimensional current distribution at a silver diffusion joint of RE-123 coated conductor (CC). This research aims at the understanding of electromagnetic behaviors in a jointed CC and at the establishment of an analysis model for it. Two-dimensional distribution of sheet current density in a jointed sample was visualized by a SHPM measurement with a spatial resolution of a few hundred micrometers. Then, it was found that such a distribution included information about current transfer between the jointed pieces. Furthermore, the experimental results were successfully reconstructed by a three-dimensional FEM analysis. We believe that these will be very important findings for the establishment of jointing processes on CCs and for the designs of practical applications which need such processes.

Original languageEnglish
Article number5677565
Pages (from-to)3403-3407
Number of pages5
JournalIEEE Transactions on Applied Superconductivity
Volume21
Issue number3 PART 3
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • Coated conductor
  • Current distribution
  • Finite element method
  • Joint
  • Scanning hall-probe microscopy

ASJC Scopus subject areas

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

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