Abstract

The influence of KClO3 addition on the magnetic properties and microstructure of YBCO HTSC materials with nominal composition (A): Y1Ba2-xKxCu3Oy, (B): Y1-0.2xBa2-0.2xKxCu3 Oy, (C): Y1Ba2Cu3.5-xKxOy (x = 0-0.75) were investigated. Magneto-optic imaging of flux distributions was employed to study the grain connectivity in the doped and undoped samples in a direct way. The obtained flux patterns taken at various temperatures reveal that KClO3-doped samples (x = 0.30) exhibit flux distributions being close to those being observed in melt-textured superconductors. This demonstrates that the grain connectivity in the doped samples is considerably improved as compared to pure ones, which is an important issue for the fabrication of coated conductors of YBCO.

Original languageEnglish
Article number11260
Pages (from-to)201-204
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
DOIs
Publication statusPublished - 2001 Jan 1

Keywords

  • Grain boundaries
  • KClO doping
  • MO imaging
  • YBCO HTSC

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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