Microstructure and superconducting properties of Dy-Ba-Cu-O bulk superconductors fabricated in different oxygen atmospheres

H. Tanaka, S. Nariki, N. Sakai, I. Hirabayashi, M. Murakami, T. Takizawa

Research output: Contribution to journalConference article

15 Citations (Scopus)


We have investigated the effect of microstructure and superconducting properties of melt-textured Dy-Ba-Cu-O bulk superconductors on various oxygen partial pressures in melt processing. The c-axis-oriented Dy-Ba-Cu-O bulk superconductors are melt textured in 1% O2-Ar, air and pure O 2. It is found that the distribution of voids in the microstructure depends on oxygen pressures. The number of voids decreases in a sample fabricated in O2. The peak effect is observed in Jc-B curves of these samples except for the sample fabricated in 1% O2. Such behavior is similar to those found in Nd- and Sm-Ba-Cu-O. These results indicate the possibility of the Dy/Ba substitution.

Original languageEnglish
Pages (from-to)660-665
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberI
Publication statusPublished - 2005 Oct 1
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25



  • Bulk superconductor
  • Dy-Ba-Cu-O
  • Melt processing
  • Microstructure

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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