Preparation of NdBa2Cu3O7-δ superconductor by sol-gel method

Gohki Murakami, Yoshio Masuda, Jisun Jin, Shinobu Fujihara, Toshio Kimura, Keiichi Tanabe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A sol-gel method was applied to preparation of the NdBa2Cu3O7-δ superconducting ceramics. Influence of synthesizing processes and heating conditions of gels on magnetic and electrical properties of NdBa2Cu3O7-δ was investigated. It has been found that samples consisting of a single phase of NdBa2Cu3O7-δ are obtained by reheating baked gels at 700°C under vacuum, which temperature is lower than those used till now for producing the NdBa2Cu3O7-δ ceramics. It has also been confirmed that undergoing the incongruent melting is effective to improve the superconducting properties. Tc(onset) was reached 93K, and Jc of 1.47 × 106 A/cm2 was obtained.

Original languageEnglish
Pages (from-to)797-802
Number of pages6
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume44
Issue number8
DOIs
Publication statusPublished - 1997 Aug

Keywords

  • Incongruent melting
  • Nd-123 superconductor
  • O anneal
  • Sol-gel method

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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