A New Process with the Promise of High <I>J</I><SUB>c</SUB> in Oxide Superconductors

• Murakami Masato

  R & D Laboratories-I, Nippon Steel Corporation

• Morita Mitsuru

  R & D Laboratories-I, Nippon Steel Corporation

• Doi Kenji

  R & D Laboratories-I, Nippon Steel Corporation

• Miyamoto Katsuyoshi

  R & D Laboratories-I, Nippon Steel Corporation

抄録

We report a new process which promises high critical current density in oxide superconductors. The process consists of three stages. Firstly a YBa₂Cu₃O_x 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 YBa₂Cu₃O_x which yields a high J_c value in the presence of magnetic fields. It is also found that Bean's critical state is realized in such high J_c samples.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 28 (7), 1189-1194, 1989

  公益社団法人 応用物理学会

キーワード

• YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<I><SUB>x</SUB></I>
• melt process
• peritectic reaction
• critical current density
• critical state model

詳細情報

• CRID: 1572824502960543488
• NII論文ID: 130003468863
• ISSN: 00214922
• Web Site: https://jlc.jst.go.jp/DN/JALC/00337527447?from=CiNii
• 本文言語コード: en
• データソース種別:
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