Effect of microstructure on the superconducting properties of Gd-Ba-Cu-O bulk fabricated in air

S. Nariki, H. Hinai, N. Sakai, M. Murakami, M. Otsuka

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Bulk Gd-Ba-Cu-O superconductors were melt processed in air. The Gd2BaCuO5 (Gd211) particles dispersed in the melt-textured bulk could be refined by employing fine Gd211 starting powders. Since Tc of the bulk samples was lowered with decreasing the size of Gd211 particle, Jc was not improved. However, we found that a depression of Tc was prevented by Ag addition, leading to higher Jc values. The Jc of Gd-Ba-Cu-O/Ag with Gd211 particles about 0.7 μm in size exhibited 60 000 A/cm2 at 77 K and self-field.

Original languageEnglish
Pages (from-to)817-820
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume357-360
DOIs
Publication statusPublished - 2001 Aug

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Keywords

  • Critical current density
  • Critical temperature
  • Gd-Ba-Cu-O
  • Melt processing

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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