Article Comparison of J c Characteristics Among (Ba,Na)Fe2As2 Wires and Tapes Fabricated by Different Methods

T. Tamegai ORCID ; R. Sakagami ; T. Ito ; K Takinoiri ORCID ; A. Kikuchi SAMURAI ORCID ; M. Yamamoto

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T. Tamegai, R. Sakagami, T. Ito, K Takinoiri, A. Kikuchi, M. Yamamoto. Comparison of J c Characteristics Among (Ba,Na)Fe2As2 Wires and Tapes Fabricated by Different Methods. IEEE Transactions on Applied Superconductivity. 2024, 35 (5), 1-5. https://doi.org/10.1109/tasc.2024.3513284

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(abstract)

In the present study, critical current density (Jc) characteristics and uniformity of (Ba,Na)Fe2As2 wires and tapes fabricated by different methods and sheath materials are compared. Impurity-free high-quality polycrystalline powders were prepared by two different methods; direct reaction method and precursor method. By optimizing the firing temperature and holding time of precursors, we have succeeded in obtaining high quality precursor powders. In the case of wire drawing, a rotary swager with an automatic wire feeder is used to prevent sausaging. To further deform it into a tape form, cold press was used. In addition to the Jc characteristics of (Ba,Na)Fe2As2 wire and tapes, X-ray characterizations for the evaluation of texturing
and uniformity are presented. Finally, a fine and long (Ba,Na)Fe2As2 wire is fabricated using Monel as an outer sheath material, and its characteristics are presented.

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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: Critical current density, iron-based super conductors, wires and tapes, (Ba,Na)Fe2As2

Date published: 2024-12-11

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

  • IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 35 issue. 5 p. 1-5

Funding:

  • Japan Superconductivity Application Development Inc.

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5592

First published URL: https://doi.org/10.1109/tasc.2024.3513284

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Updated at: 2025-07-16 16:30:21 +0900

Published on MDR: 2025-07-16 16:18:19 +0900

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