Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe0.8Co0.2)12Nanoparticles

Ryusei Uda; Kunihiro Koike; Nobuyuki Inaba; Hiroaki Kato; Masaru Itakura; Masaki Nakano; Susumu Okubo; Hitoshi Ohta

doi:10.1109/INTERMAG50591.2023.10265087

Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe_0.8Co_0.2)₁₂Nanoparticles

Ryusei Uda, Kunihiro Koike, Nobuyuki Inaba, Hiroaki Kato, Masaru Itakura, Masaki Nakano, Susumu Okubo, Hitoshi Ohta

Materials Physics and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The demagnetization process of exchange-coupled Sm(Fe0.8Co0.2)12/\alpha-Fe nanocomposite magnet particles with a-Fe phase coated on the sides of rectangular Sm(Fe0.8Co0.2)12 nanoparticles and the effect of Fe phase arrangement on their (BH)_{\max} are systematically investigated from micromagnetics calculations. The (BH)_{\max} of the reference model Sm(Fe0.8Co0.2)12 particles without Fe layer was 630 kJ/m3. On the other hand, the (BH)_{\max} of the nanocomposite magnet particle model, in which the four sides of the hard phase are coated with a soft phase, was found to have the highest (BH)_{\max} of 678 kJ/m3. This result may provide a guideline for designing high-performance magnet particle materials while reducing the use of rare metals.

Original language	English
Title of host publication	2023 IEEE International Magnetic Conference, INTERMAG 2023 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350332469
DOIs	https://doi.org/10.1109/INTERMAG50591.2023.10265087
Publication status	Published - 2023
Event	2023 IEEE International Magnetic Conference, INTERMAG 2023 - Sendai, Japan Duration: May 15 2023 → May 19 2023

Publication series

Name	Digests of the Intermag Conference
Volume	2023-May
ISSN (Print)	0074-6843

Conference

Conference	2023 IEEE International Magnetic Conference, INTERMAG 2023
Country/Territory	Japan
City	Sendai
Period	5/15/23 → 5/19/23

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1109/INTERMAG50591.2023.10265087

Cite this

Uda, R., Koike, K., Inaba, N., Kato, H., Itakura, M., Nakano, M., Okubo, S., & Ohta, H. (2023). Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe_0.8Co_0.2)₁₂Nanoparticles. In 2023 IEEE International Magnetic Conference, INTERMAG 2023 - Proceedings (Digests of the Intermag Conference; Vol. 2023-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTERMAG50591.2023.10265087

Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe_0.8Co_0.2)₁₂Nanoparticles. / Uda, Ryusei; Koike, Kunihiro; Inaba, Nobuyuki et al.
2023 IEEE International Magnetic Conference, INTERMAG 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (Digests of the Intermag Conference; Vol. 2023-May).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Uda, R, Koike, K, Inaba, N, Kato, H, Itakura, M, Nakano, M, Okubo, S & Ohta, H 2023, Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe_0.8Co_0.2)₁₂Nanoparticles. in 2023 IEEE International Magnetic Conference, INTERMAG 2023 - Proceedings. Digests of the Intermag Conference, vol. 2023-May, Institute of Electrical and Electronics Engineers Inc., 2023 IEEE International Magnetic Conference, INTERMAG 2023, Sendai, Japan, 5/15/23. https://doi.org/10.1109/INTERMAG50591.2023.10265087

Uda R, Koike K, Inaba N, Kato H, Itakura M, Nakano M et al. Enhancement of Maximum Energy Product by α-Fe Coating on the Side of Rectangular Sm(Fe_0.8Co_0.2)₁₂Nanoparticles. In 2023 IEEE International Magnetic Conference, INTERMAG 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2023. (Digests of the Intermag Conference). doi: 10.1109/INTERMAG50591.2023.10265087

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abstract = "The demagnetization process of exchange-coupled Sm(Fe0.8Co0.2)12/\alpha-Fe nanocomposite magnet particles with a-Fe phase coated on the sides of rectangular Sm(Fe0.8Co0.2)12 nanoparticles and the effect of Fe phase arrangement on their (BH)_{\max} are systematically investigated from micromagnetics calculations. The (BH)_{\max} of the reference model Sm(Fe0.8Co0.2)12 particles without Fe layer was 630 kJ/m3. On the other hand, the (BH)_{\max} of the nanocomposite magnet particle model, in which the four sides of the hard phase are coated with a soft phase, was found to have the highest (BH)_{\max} of 678 kJ/m3. This result may provide a guideline for designing high-performance magnet particle materials while reducing the use of rare metals.",

author = "Ryusei Uda and Kunihiro Koike and Nobuyuki Inaba and Hiroaki Kato and Masaru Itakura and Masaki Nakano and Susumu Okubo and Hitoshi Ohta",

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AU - Kato, Hiroaki

AU - Itakura, Masaru

AU - Nakano, Masaki

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AB - The demagnetization process of exchange-coupled Sm(Fe0.8Co0.2)12/\alpha-Fe nanocomposite magnet particles with a-Fe phase coated on the sides of rectangular Sm(Fe0.8Co0.2)12 nanoparticles and the effect of Fe phase arrangement on their (BH)_{\max} are systematically investigated from micromagnetics calculations. The (BH)_{\max} of the reference model Sm(Fe0.8Co0.2)12 particles without Fe layer was 630 kJ/m3. On the other hand, the (BH)_{\max} of the nanocomposite magnet particle model, in which the four sides of the hard phase are coated with a soft phase, was found to have the highest (BH)_{\max} of 678 kJ/m3. This result may provide a guideline for designing high-performance magnet particle materials while reducing the use of rare metals.

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