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

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

Research output: Contribution to journalArticle

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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Superconducting materials
Processing
atmospheres
curves

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

Cite this

Melt processing of La-Ba-Cu-O superconductors with high Tc. / Sakai, Naomichi; Goshima, S.; Kawaguchi, M.; Yoo, S. I.; Murakami, Masato.

In: Materials Science and Engineering B, Vol. 53, No. 1-2, 01.05.1998, p. 109-114.

Research output: Contribution to journalArticle

Sakai, N, Goshima, S, Kawaguchi, M, Yoo, SI & Murakami, M 1998, 'Melt processing of La-Ba-Cu-O superconductors with high Tc', Materials Science and Engineering B, vol. 53, no. 1-2, pp. 109-114.
Sakai, Naomichi ; Goshima, S. ; Kawaguchi, M. ; Yoo, S. I. ; Murakami, Masato. / Melt processing of La-Ba-Cu-O superconductors with high Tc. In: Materials Science and Engineering B. 1998 ; Vol. 53, No. 1-2. pp. 109-114.
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