Melt processing of La-Ba-Cu-O superconductors with high Tc

Naomichi Sakai, S. Goshima, M. Kawaguchi, S. I. Yoo, Masato Murakami

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2 Citations (Scopus)

Abstract

We have successfully melt-processed La-Ba-Cu-O bulk superconductors which exhibit high TC and large JC values. The employment of a 0.1% O2-Ar atmosphere and a Ba-rich La4 - xBa2 + xCu2 - xO10 - 2x second phase as a precursor was the key to obtaining a high TC phase. Fabricated bulk samples exhibit onset TC of 94 K and the secondary peak effect in the JC -B curve. The respective peak position and the irreversibility field were 1 T and 4.5 T at 77 K and the JC at the peak field was about 18000 A cm-2.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalMaterials Science and Engineering B
Volume53
Issue number1-2
Publication statusPublished - 1998 May 1
Externally publishedYes

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Keywords

  • Critical current density
  • La-Ba-Cu-O
  • Melt process
  • Phase diagram
  • Solid solution
  • Superconductor

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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