Direct Observation of Flux Behavior in High-Tc Oxide Superconductors Using The Faraday Effect of Iron Garnet Films

Satoshi Gotoh, Naoki Koshizuka, Masashi Yoshida, Masato Murakami, Shoji Tanaka

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)


A new direct observation method for the dynamical magnetic flux behavior in superconductors was developed by using the Faraday effect of an iron garnet film with perpendicular magnetization and stripe domains. The domain structure observed optically in the iron garnet film in contact with an YBa2Cu3Ox sample reveals the magnetic field distribution of the latter. It was found that the flux gradient was nonuniform due to the inhomogeneous distribution of fine Y2BaCuO5 inclusions, and the region with the largest pinning force was located in the sample used.

Original languageEnglish
Pages (from-to)L1083-L1085
JournalJapanese Journal of Applied Physics
Issue number7
Publication statusPublished - 1990 Jul
Externally publishedYes


  • Faraday effect
  • Flux gradient
  • Iron garnet
  • Pinning force
  • Residual magnetization
  • Stripe domain
  • Ybacuo

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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