Recent advances in SmFe(12)-based permanent magnets

To realize a sustainable society, ‘green technology’ with low (or even zero) CO(2) emissions is required. A key material in such technology is a permanent magnet because it is utilized for electric-power conversion in several applications including electric vehicles (EVs), hybrid EVs (HEVs), and tur...

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Detalles Bibliográficos
Autores principales: Takahashi, Y. K., Sepehri-Amin, H., Ohkubo, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Taylor & Francis 2021
Materias:
Focus on Science and Technology of Element-Strategic Permanent Magnets
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8221137/
https://www.ncbi.nlm.nih.gov/pubmed/34211334
http://dx.doi.org/10.1080/14686996.2021.1913038
Descripción
Sumario:To realize a sustainable society, ‘green technology’ with low (or even zero) CO(2) emissions is required. A key material in such technology is a permanent magnet because it is utilized for electric-power conversion in several applications including electric vehicles (EVs), hybrid EVs (HEVs), and turbines for wind power generation. To realize highly efficient electric-power conversion, a stronger permanent magnet than Nd–Fe–B is necessary. One potential candidate is a Fe-rich SmFe(12)-based compound with a ThMn(12) structure. In this paper, the phase stability, structure, and intrinsic and extrinsic magnetic properties in both film and bulk forms are reviewed. Based on these results, a possible way to realize a strong SmFe(12)-based permanent magnet in bulk form is discussed.

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