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Transferring the excellent intrinsic magnetic properties of SmFe12-based compounds to their extrinsic properties remains the main challenge in the development of high-performance SmFe12-based permanent magnets. Twin formation is one of the reasons for the inability to achieve high coercivity and remanence. Here we have shown that the addition of Co in Sm(Fe1-xCox)10–11M1–2 alloys, where M=Ti and V, leads to an increase in twin density. This study shows that the alloy composition influences not only the intrinsic magnetic properties but also the twin formation energy and its grain size dependence, crucial for the design of SmFe12-based permanent magnets.

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Keyword: Permanent magnet, SmFe12, Twin formation, intrinsic magnetic properties

Date published: 2024-12-07

Publisher: Elsevier BV

Journal:

• Scripta Materialia (ISSN: 13596462) vol. 258 116491

Funding:

Manuscript type: Author's version (Submitted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5248

First published URL: https://doi.org/10.1016/j.scriptamat.2024.116491

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Updated at: 2025-01-07 16:31:00 +0900

Published on MDR: 2025-01-20 12:30:22 +0900