5 Citations (Scopus)

Abstract

We studied the mechanism of (RE)Ba2Cu3Oy phase formation via (RE)2BaO4 in the case of GdBa2Cu3Oy + 40 mol% Gd-211 combination, using mixture of Gd2BaO4, BaCuO2 and CuO. Pellets of this composite were sintered at various temperatures between 700 °C and 1100 °C and held for 1 h in Ar (100%), Ar-1% O2, Ar-0.1% O2 atmospheres, then rapidly quenched in oil. The samples were characterized by XRD, SEM, and EPMA analyses. XRD and EPMA analyses indicated that Gd-123 phase forms at around 900 °C but the temperature depends on the chosen atmosphere. The samples quenched from high temperatures (>1000 °C) showed that final formation of a secondary phase depends on the temperature held before the quench.

Original languageEnglish
Pages (from-to)282-285
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume445-448
Issue number1-2
DOIs
Publication statusPublished - 2006 Oct 1

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Keywords

  • Electron probe micro analysis
  • GdBaO
  • Microstructure
  • Quench experiments
  • XRD

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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