Effect of BaO2 addition on superconducting properties of melt-processed (Sm, Eu, Gd)Ba2Cu3O7-δ superconductors

A. Hu, H. Zhou, S. Nariki, N. Sakai, M. Murakami, I. Hirabayashi

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We fabricated large c-axis-oriented single-grain (Sm, Eu, Gd)Ba2Cu3O7-δ bulk superconductors with BaO2 addition under 1% O2 partial pressure in Ar. The experiment showed that BaO2 addition significantly reduced RE-Ba substitution, slightly hindered the coarsening of (Sm, Eu, Gd)2BaCuO5 inclusion, and improved the superconducting properties. An optimum addition amount was around 0.1-0.18 mol-1 RE123. At 77 K, the critical current density reached 83 000 A cm-2 in zero field. A disc 3.5 cm in diameter trapped a field of 1.27 T at 77 K.

Original languageEnglish
Pages (from-to)545-548
Number of pages4
JournalSuperconductor Science and Technology
Issue number3
Publication statusPublished - 2004 Mar 1

ASJC Scopus subject areas

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


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