Evidence for pinning by (Sr,Ca) 2CuOy particles in partial-melting processed bulk Bi2Sr2CaCu2O8+δ ceramics

M. R. Koblischka, S. L. Huang, K. Fossheim, T. H. Johansen, H. Bratsberg

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Flux distributions of partial-melting processed Bi2Sr2CaCu2O8+δ ceramics are obtained using magneto-optic imaging. In remanent states (μ0Ha = 0 T), large amounts of trapped flux are observed along (Sr,Ca)2CuOy particles embedded in the Bi2Sr2CaCu2O8+δ matrix. Despite the relatively large size of these particles (up to 30 μm), the pinning effect is similar to that of Y2BaCuO5 particles in melt-processed YBa2Cu3O7-δ. Furthermore, we discuss how the pinning capability of non-superconducting particles of different sizes and densities will show up in magneto-optic images.

Original languageEnglish
Pages (from-to)207-211
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume300
Issue number3-4
DOIs
Publication statusPublished - 1998 Jan 1

Keywords

  • (Sr,Ca)CuO particles
  • Ceramics
  • Pinning properties

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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