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説明:

Superconducting joints between Bi-2223 tapes were fabricated by a hot-pressing process with a 24 h heat treatment. We developed specialized equipment to apply pressure to the joint during the heat treatment. Hot pressing is effective for producing practical critical current even by the short heat treatment. The superconducting joint in a closed-loop showed a resistance of 7.3 × 10 −15 Ω at 4.2 K in self-field. The maximum persistent current that could flow in the loop was estimated to be about 170 A at 4.2 K. The purification and further densification of the intermediate layer in the superconducting joint are issues that need to be addressed. Once these issues are addressed, the hot-pressing process should be a promising method for fabricating high-performance Bi-2223 superconducting joints in high yields within a short processing time.

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キーワード: Superconducting joint

刊行年月日: 2023-03-02

出版者: Institute of Electrical and Electronics Engineers (IEEE)

掲載誌:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 33 issue. 5 p. 1-7 6400207

研究助成金:

• JST-Mirai Program JPMJMI17A2
• JSPS KAKENHI JP22K14482

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4468

公開URL: https://doi.org/10.1109/tasc.2023.3251299

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更新時刻: 2025-03-02 12:30:11 +0900

MDRでの公開時刻: 2025-03-02 12:30:12 +0900