MO observation of flux penetration into high-Tc superconductors with grain boundaries

N. Chikumoto, K. Furusawa, Masato Murakami, S. Tajima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Effect of grain boundaries on the magnetic field distributions in YBCO was studied by use of magneto-optical (MO) imaging technique. The grain boundary was artificially introduced with a multi-seeded melt-growth process. The current distribution in the sample was obtained from the MO image using an inversion scheme based on the inverse-matrix method. With this technique, we could obtain intergranular and intragranular critical current densities. Large depression of the intergranular critical current was observed in the sample with large misorientation angles.

Original languageEnglish
Pages (from-to)1005-1010
Number of pages6
JournalPhysica C: Superconductivity and its Applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct

Fingerprint

Superconducting materials
critical current
Grain boundaries
penetration
grain boundaries
Critical current density (superconductivity)
Fluxes
Critical currents
current distribution
imaging techniques
misalignment
matrix methods
inversions
Magnetic fields
current density
Imaging techniques
magnetic fields

Keywords

  • Critical current density
  • Grain boundary
  • Magneto-optical imaging
  • Y123

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

MO observation of flux penetration into high-Tc superconductors with grain boundaries. / Chikumoto, N.; Furusawa, K.; Murakami, Masato; Tajima, S.

In: Physica C: Superconductivity and its Applications, Vol. 412-414, No. SPEC. ISS., 10.2004, p. 1005-1010.

Research output: Contribution to journalArticle

Chikumoto, N. ; Furusawa, K. ; Murakami, Masato ; Tajima, S. / MO observation of flux penetration into high-Tc superconductors with grain boundaries. In: Physica C: Superconductivity and its Applications. 2004 ; Vol. 412-414, No. SPEC. ISS. pp. 1005-1010.
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