Magneto-optical characterizations of composite superconductors

M. Zamboni, Muralidhar Miryala, S. Koishikawa, Masato Murakami

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The magnetic flux dynamic in RE-Ba-Cu-O (RE = La, Nd, Sm, Eu or Gd) composite superconductors processed by the oxygen-controlled-melt-growth (OCMG) method was investigated by magneto-optical (M-O) technique using an iron-garnet film with in-plane magnetization. An external magnetic field H was applied parallel to sample's c-axis (H ∥ c) up to 5000 Oe at different temperatures. The field distribution as well as the current paths were clearly visualized and correlated to the sample microstructure. The M-O images were associated with the data obtained by analysing the magnetization curves. Critical current densities were calculated from magnetization hysteresis measurements. The direct and detailed knowledge of the field behaviour provided by the M-O images allows precise interpretation of the magnetization loops.

Original languageEnglish
Pages (from-to)811-815
Number of pages5
JournalSuperconductor Science and Technology
Volume13
Issue number6
DOIs
Publication statusPublished - 2000 Jun
Externally publishedYes

Fingerprint

Superconducting materials
Magnetization
magnetization
composite materials
Composite materials
Garnets
Magnetic flux
garnets
magnetic flux
Hysteresis
critical current
Iron
hysteresis
Magnetic fields
current density
Oxygen
iron
microstructure
Microstructure
oxygen

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics

Cite this

Magneto-optical characterizations of composite superconductors. / Zamboni, M.; Miryala, Muralidhar; Koishikawa, S.; Murakami, Masato.

In: Superconductor Science and Technology, Vol. 13, No. 6, 06.2000, p. 811-815.

Research output: Contribution to journalArticle

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