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

Michael Rudolf 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 Jan 1
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
Visualization
ceramics
Magnetic domains
Garnets
magnetic domains
garnets
Vortex flow
penetration
grain size
vortices
Fluxes
Temperature
temperature

ASJC Scopus subject areas

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

Cite this

Flux pinning and grain coupling studied by magneto-optical visualization in Bi2Sr2CaCu2O8+δ ceramics. / Koblischka, Michael Rudolf; Huang, Sun Li; Johansen, T. H.; Bratsberg, H.; Fossheim, K.

In: Physica C: Superconductivity and its Applications, Vol. 282-287, No. PART 3, 01.01.1997, p. 1469-1470.

Research output: Contribution to journalArticle

Koblischka, Michael Rudolf ; Huang, Sun Li ; Johansen, T. H. ; Bratsberg, H. ; Fossheim, K. / Flux pinning and grain coupling studied by magneto-optical visualization in Bi2Sr2CaCu2O8+δ ceramics. In: Physica C: Superconductivity and its Applications. 1997 ; Vol. 282-287, No. PART 3. pp. 1469-1470.
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