Matrix chemical ratio and its optimization for highest flux pinning in ternary (Nd-Eu-Gd)Ba2Cu3Oy

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We have fabricated the ternary (Nd, Eu, Gd)Ba2Cu3Oy system with various Nd:Eu:Gd ratios with the aim of optimizing the pinning performance at 77 K. The magnetization measurements suggest that the three elements (Nd, Eu, Gd) contribute to pinning in different manners: Nd mainly enhances flux pinning at low magnetic fields, Eu controls the second peak position and the irreversibility field, while Gd slightly enhances intermediate and high-field Jc values. The scaling analysis of the pinning force density versus the reduced field h = Ha/Hirr showed a peak at h = 0.55. This value is higher than the theoretically predicted highest value of h = 0.5, corresponding to ΔTc pinning. We proved that an excellent flux pinning can be achieved in the entire magnetic field range when sub-micron secondary phase particles are dispersed in the NEG-123 matrix with an optimum Nd:Eu:Gd ratio.

Original languageEnglish
Pages (from-to)688-693
Number of pages6
JournalSuperconductor Science and Technology
Volume15
Issue number5
DOIs
Publication statusPublished - 2002 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Matrix chemical ratio and its optimization for highest flux pinning in ternary (Nd-Eu-Gd)Ba<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub>'. Together they form a unique fingerprint.

Cite this