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Enhancing the characteristics of Nb3Sn superconducting wire is essential for the development of magnets for fusion reactors like ITER and DEMO. In this study, specific diffusion couples of Nb/Cu/Sn were fabricated with different combinations of Ti and Zn doping to Cu and Sn and their diffusion reaction behaviors in Nb3Sn layer formation were investigated. Besides, anticipating a potential grain refinement effect, an Mg and Zn co-doped sample was additionally fabricated.

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  © 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keyword: Nb3Sn, Ti, Zn

Date published: 2025-02-06

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 35 issue. 5

Funding:

• JSPS KAKENHI JP23K04453

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6050

First published URL: https://doi.org/10.1109/tasc.2025.3539271

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Updated at: 2025-12-22 13:19:41 +0900

Published on MDR: 2025-12-22 16:22:09 +0900