High flux pinning in ternary (Nd-Eu-Gd)Ba2Cu3Oy superconductors at 77 K

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1 Citation (Scopus)

Abstract

The optimisation of ternary (Nd-Eu-Gd)Ba2Cu3Oy (NEG) bulk quasi-crystals has been carried out to achieve high pinning at 77 K. For this purpose we prepared samples with various Nd:Eu:Gd ratios in the NEG compound. Our experimental results suggest that a suitable combination of the three elements on the rare earth site can enhance flux pinning at low, intermediate, and high magnetic fields. This is thus an effective tool for tailoring properties of this material according to requirements of the particular application. We show that the maximum flux pinning can be achieved in the whole magnetic field range (at 77 K) when very fine (sub-micron) secondary phase particles are dispersed in a superconducting 123 matrix with an optimum Nd:Eu:Gd ratio.

Original languageEnglish
Pages (from-to)750-754
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1
Externally publishedYes

Keywords

  • Critical current density (J)
  • Flux pinning
  • Matrix chemical ratio
  • NEG-123

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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