Magneto-optical characterizations of composite superconductors

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

研究成果: Conference article査読

3 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)811-815
ページ数5
ジャーナルSuperconductor Science and Technology
13
6
DOI
出版ステータスPublished - 2000 6 1
外部発表はい
イベントThe 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn
継続期間: 1999 10 191999 10 22

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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