ポスター Atomistic model study on thermodynamic properties of (Nd1-xDyx)2Fe14B and dysprosium substitution effect on coercivity in neodymium permanent magnets

Masamichi Nishino SAMURAI ORCID (Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials Field/Quantum Solid State Materials Group, National Institute for Materials Science) ; Rachida Lamouri (Research Center for Materials Nanoarchitectonics (MANA)/Quantum Materials Field/Quantum Solid State Materials Group, National Institute for Materials Science) ; Seiji Miyashita (Department of Physics, Graduate School of Science, The University of Tokyo)

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Masamichi Nishino, Rachida Lamouri, Seiji Miyashita. Atomistic model study on thermodynamic properties of (Nd1-xDyx)2Fe14B and dysprosium substitution effect on coercivity in neodymium permanent magnets . https://doi.org/10.48505/nims.5788

説明:

(abstract)

The coercive force (field) of Neodymium (Nd) magnets (Nd₂Fe₁₄B) is often enhanced by adding dysprosium (Dy), particularly at high temperatures. To better understand the magnetic properties of Dy-substituted systems and the underlying mechanisms of coercivity enhancement, it is essential to investigate both the thermodynamic properties and dynamic behavior of (Nd₁₋ₓDyₓ)₂Fe₁₄B from a microscopic perspective. To this end, we have recently developed an atomistic modeling approach. Using atomistic models with microscopic parameters estimated from first-principles calculations, we carried out a detailed investigation of the thermodynamic properties and dynamical features of (Nd₁₋ₓDyₓ)₂Fe₁₄B.

権利情報:

キーワード: atomistic model , neodymium magnets, dysprosium-substituted magnets, coercive force , thermodynamic properties, dynamics

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会議: The 28th International Workshop on Rare Earth and Future Permanent Magnets and Their Applications (REPM2025) (2025-07-27 - 2025-07-31)

研究助成金:

  • MEXT Scientific Research B (No. 24 K01332)

原稿種別: 論文以外のデータ

MDR DOI: https://doi.org/10.48505/nims.5788

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更新時刻: 2025-10-01 16:30:20 +0900

MDRでの公開時刻: 2025-10-01 16:23:26 +0900

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