Peak effect in field trapping properties of large grain Dy-Ba-Cu-O/Ag bulk superconductors

S. Nariki, M. Murakami

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18 Citations (Scopus)

Abstract

The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added Dy-Ba-Cu-O single domain bulk has been investigated. The Dy-Ba-Cu-O/Ag bulks 32 mm in diameter with different Dy211 contents were fabricated in air with the top-seeded melt-growth method using NdBa2Cu3O7 seed crystal. The field dependence of their trapped magnetic fields was measured using a Hall probe sensor at 77 K. In the case of the Dy-Ba-Cu-O bulk with excess 5 mol% of Dy211, the peak was found at around 1.5 T of external field in the trapped field measurement at 77 K. The value of trapped field was 1.2 T at the peak field. On the other hand, the Dy-Ba-Cu-O bulk with excess 40 mol% of Dy211 did not exhibit the peak effect. These results reflect the secondary peak effect in Jc-B properties of the bulk samples.

Original languageEnglish
Pages (from-to)759-763
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1

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Keywords

  • Critical current density
  • Dy-Ba-Cu-O
  • Melt processing
  • Trapped magnetic field

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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