A new process with the promise of high Jc in oxide superconductors

Masato Murakami, Mitsuru Morita, Kenji Doi, Katsuyoshi Miyamoto

Research output: Contribution to journalArticle

669 Citations (Scopus)

Abstract

We report a new process which promises high critical current density in oxide superconductors. The process consists of three stages. Firstly a YBa2Cu3Ox sample is rapidly heated and quenched from the Y2O3 plus liquid region. Subsequently the quenched sample is reheated to the Y2BaCuO5 plus liquid region, and then slowly cooled with a temperature gradient in flowing oxygen. The process enables us to grow a superconducting phase unidirectionally and to suppress the second phase intrusion, leading to the production of well textured YBa2Cu3Ox which yields a high Jc value in the presence of magnetic fields. It is also found that Bean's critical state is realized in such high Jc samples.

Original languageEnglish
Pages (from-to)1189-1194
Number of pages6
JournalJapanese Journal of Applied Physics
Volume28
Issue number7 R
DOIs
Publication statusPublished - 1989 Jul

Keywords

  • Critical current density
  • Critical state model
  • Melt process
  • Peritectic reaction
  • YBaCuO

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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