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西野 正理
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原子論に基づく次世代マイクロマグネティクスによる 保磁力制御法の開発
Description/Abstract:
永久磁石の保磁力の制御は、高いエネルギー変換効率の実現へ向けて重要な課題である。高温で高保磁力化をめざす研究は数多く行われているが、保磁力の起源は依然としてよく分かっていない。本研究は、原子論を基礎とした新しい方法論を用いて、ジスプロシウム置換効果でネオジム磁石が保磁力増強...
Keyword:
atomistic theory
,
coercivity
,
dysprosium substitution
,
microscopic mechanism
,
neodymium magnets
, and
thermal fluctuation
Resource Type:
Report
Author:
西野 正理
,
早坂 太志
, and
宮下精二
Date Uploaded:
19/03/2024
Quantitative estimation of coercive force of a magnetic grain by dynamical simulations
Description/Abstract:
High coercivity is an important property of permanent magnets for application in energy conversion devices. Because coercivity is a long-...
Keyword:
coercive force, magnetic grain, dynamical simulations, neodymium permanent magnet, zero-field energy barrier, stochastic LLG simulations
Resource Type:
Presentation
Author:
西野 正理
and
宮下精二
Date Uploaded:
12/12/2023
原子論的スピンモデルによる永久磁石の磁気特性の研究 ―熱揺らぎおよび温度効果の取り扱いと将来展望―
Description/Abstract:
We review atomistic spin model studies, a new approach for theoretical investigations, on magnetic properties of permanent magnets. In th...
Keyword:
保磁力
,
原子論的スピンモデル
,
永久磁石
,
温度効果
, and
熱揺らぎ
Resource Type:
Article
Author:
西野 正理
and
宮下 精二
Journal:
Journal of the Japan Institute of Metals and Materials
Date Uploaded:
18/10/2023
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3
Keyword
atomistic theory
1
coercive force, magnetic grain, dynamical simulations, neodymium permanent magnet, zero-field energy barrier, stochastic LLG simulations
1
coercivity
1
dysprosium substitution
1
microscopic mechanism
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Japanese
2
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National Institute for Materials Science
2
Japan Institute of Metals
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3
Rights Statement Sim
In Copyright
2
Creative Commons BY Attribution 4.0 International
1
Author
西野 正理
[remove]
3
宮下精二
2
宮下 精二
1
早坂 太志
1
Funder
ESICMM
1
公益財団法人 村田学術振興・教育財団 研究助成
1
Journal
Journal of the Japan Institute of Metals and Materials
1