Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O

M. Muralidhar, M. Jirsa, K. Iida, M. Murakami

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.

Original languageEnglish
Pages (from-to)665-668
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
Issue numberSUPPL. 2
DOIs
Publication statusPublished - 2001 Aug 1

Keywords

  • CeO
  • Fine normal-conducting particles
  • Gd-211
  • High critical current density
  • LRE-BaCuO
  • Peak effect

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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