Flux pinning and grain coupling studied by magneto-optical visualization in Bi2Sr2CaCu2O8+δ ceramics

M. R. Koblischka, Sun Li Huang, T. H. Johansen, H. Bratsberg, K. Fossheim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Efforts are being made to improve the pinning and grain coupling in Bi2Sr2CaCu2O8+δ ceramics. For this purpose, the penetration of vortices is visualized by means of magneto-optical garnet indicators at temperatures up to 77 K. It is shown that there is a difference between the real grain size and the size of the magnetic domains. The samples are found to show a strong coupling between the grains, which is manifested by the observation of a flux front propagating into the sample on increasing field.

Original languageEnglish
Pages (from-to)1469-1470
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 3
DOIs
Publication statusPublished - 1997 Aug
Externally publishedYes

ASJC Scopus subject areas

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

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