Preparation of Ag-doped NdBa2Cu3O7-δ superconductors by a sol-gel method

Gohkì Murakami, Yoshìo Masuda, Jisun Jin, Keiichi Tanabe, Shinobu Fujihara, Toshio Kimura

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2 Citations (Scopus)

Abstract

Ag-doped NdBa2Cu3O7-δ superconducting ceramics were prepared by a sol-gel method. Ag was distributed uniformly in the sintered samples. The incongruent melting temperature of the NdBa2Cu3O7-δ samples prepared by our sol-gel method was lower than that of the samples prepared by the conventional powder method. The incongruent melting temperature was further decreased by doping with Ag. The authors consider that the incongruent melting is induced by reaction between NdBa2Cu3O7-δ and Ag. The superconducting transition width ΔT(ΔT = Tc(onset) - Tc(end)) was decreased by doping with Ag. The electrical resistivity of a 10 mass% Ag-doped sample dropped sharply from 93 K (Tc(onset)) and showed zero resistivity at 86 K (Tc(end)).

Original languageEnglish
Pages (from-to)377-380
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume106
Issue number4
Publication statusPublished - 1998 Apr

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Keywords

  • Ag addition
  • Incongruent melting
  • NdBaCuO superconductor
  • Oxygen diffusion
  • Sol-gel method

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Murakami, G., Masuda, Y., Jin, J., Tanabe, K., Fujihara, S., & Kimura, T. (1998). Preparation of Ag-doped NdBa2Cu3O7-δ superconductors by a sol-gel method. Journal of the Ceramic Society of Japan, 106(4), 377-380.