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Computer simulations of the magnetic properties of Sm-Co/α-Fe nanocomposite magnets with a core-shell structure


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Title: Computer simulations of the magnetic properties of Sm-Co/α-Fe nanocomposite magnets with a core-shell structure
Authors: Fukunaga, Hirotoshi / Horikawa, Ryo / Nakano, Masaki / Yanai, Takeshi / Fukuzaki, T. / Abe, K.
Issue Date: Jul-2013
Publisher: nstitute of Electrical and Electronics Engineers Inc.
Citation: IEEE Transactions on Magnetics, 49(7), pp.3240-3243
Abstract: The magnetic properties of SmCo5/α-Fe nanocomposite magnets with a core-shell structure were computer-simulated for varying particle size L, α-Fe fraction, and temperature. The structure, consisting of a hard SmCo5 core and a soft α-Fe shell demonstrated better magnetic properties than those of the inverse structure. The (BH)max value for anisotropic magnets was approximately 800 kJ/m3 at room temperature for an L value of 6.4 nm and an α-Fe fraction of 87.5%. At 473 K, the achievable (BH)max value was approximately 700 kJ/m 3. These values are comparable to and higher than those for Nd 2Fe14B/α-Fe nanocomposite magnets at room temperature and 473 K, respectively, indicating a promising potential for high-temperature SmCo5/α-Fe nanocomposite magnets.
Keywords: α-Fe / (BH)max / coercivity / core-shell structure / nanocomposite / Sm-Co
URI: http://hdl.handle.net/10069/33793
ISSN: 00189464
DOI: 10.1109/TMAG.2013.2247030
Rights: © 2013 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.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/33793

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