Field dependence of Jc for filamentary RE-Ba-Cu-O superconductors prepared by a solution spinning method

Tomoko Goto, Kazuo Watanabe

Research output: Contribution to journalConference articlepeer-review


The filamentary RE-Ba-Cu-O (RE = Nd, Nd-Eu-Gd, and Nd-Sm-Eu-Gd) precursor was prepared by a solution spinning method, through a homogeneous aqueous solution containing mixed acetates of RE, Ba and Cu, poly(vinyl alcohol) and organic acids. The filamentary precursor was partially melted in flowing 0.1%O2+Ar or 1%O2+Ar and then oxygenated under various conditions. The transport critical current density (Jc) of the samples was measured in magnetic fields up to 10 T at 77 K. The influence of field dependence of Jc on the initial different RE elements in the filamentary RE-Ba-Cu-O superconductors was examined. The field dependence of Jc was improved by mixing three or four different RE elements. The Jc value at 77 K and up to 6 T for the sample partially melted in flowing 0.1%02+Ar was higher than that for the sample melted in flowing 1%O2+Ar. The highest Jc value of more than 1.76 ×104 A/cm2 at 77 K and 9 T was detected for filamentary Nd-Sm-Eu-Gd-Ba-Cu-O superconductors partially melted in flowing 0.1%O2+Ar.

Original languageEnglish
Pages (from-to)3892-3895
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1 III
Publication statusPublished - 2001 Mar
Externally publishedYes
Event2000 Applied Superconductivity Conference - Virginia Beach, VA, United States
Duration: 2000 Sept 172000 Sept 22


  • Field dependence of J
  • Filamentary RE-Ba-Cu-O
  • Oxygen controlled melt growth
  • Solution spinning

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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