Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd2Fe14B type bulk exchange-spring magnets

Hideaki Ono; Tetsuro Tayu; Norihisa Waki; Tatsuo Sugiyama; Munekatsu Shimada; Makoto Kanou; Akira Fujiki; Hiroshi Yamamoto; Keisuke Takasugi; Masato Tani

doi:10.2497/jjspm.49.141

Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd₂Fe₁₄B type bulk exchange-spring magnets

Hideaki Ono, Tetsuro Tayu, Norihisa Waki, Tatsuo Sugiyama, Munekatsu Shimada, Makoto Kanou, Akira Fujiki, Hiroshi Yamamoto, Keisuke Takasugi, Masato Tani

Research output: Contribution to journal › Article › peer-review

Abstract

Magnetic properties and structures of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd₂Fe₁₄B type Nd-Fe-Ce-V-B system bulk exchange-spring magnets prepared by the Spark Plasma Sintering (SPS) method were investigated. In this range of Nd content, the bulk magnets showed the same magnetic properties as those of the annealed ribbons used as the raw materials. The saturation magnetization and soft/hard phase ratio corresponded with the estimated values. However, the exchange coupling strength decreased conspicuously with a lower Nd content presumably as a result of an increase in the grain size.

Original language	English
Pages (from-to)	141-145
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	49
Issue number	2
DOIs	https://doi.org/10.2497/jjspm.49.141
Publication status	Published - 2002 Feb
Externally published	Yes

Keywords

Bulk exchange-spring magnets
Low rare-earth content (Nd = 2 - 7 at.%)
Magnetic properties
Nd-Fe-Co-V-B system alloys
Spark Plasma Sintering (SPS) method
α-Fe/NdFeB type exchange-spring magnets

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.2497/jjspm.49.141

Cite this

Ono, H., Tayu, T., Waki, N., Sugiyama, T., Shimada, M., Kanou, M., Fujiki, A., Yamamoto, H., Takasugi, K., & Tani, M. (2002). Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd₂Fe₁₄B type bulk exchange-spring magnets. Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, 49(2), 141-145. https://doi.org/10.2497/jjspm.49.141

Ono, H, Tayu, T, Waki, N, Sugiyama, T, Shimada, M, Kanou, M, Fujiki, A, Yamamoto, H, Takasugi, K & Tani, M 2002, 'Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd₂Fe₁₄B type bulk exchange-spring magnets', Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, vol. 49, no. 2, pp. 141-145. https://doi.org/10.2497/jjspm.49.141

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abstract = "Magnetic properties and structures of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd2Fe14B type Nd-Fe-Ce-V-B system bulk exchange-spring magnets prepared by the Spark Plasma Sintering (SPS) method were investigated. In this range of Nd content, the bulk magnets showed the same magnetic properties as those of the annealed ribbons used as the raw materials. The saturation magnetization and soft/hard phase ratio corresponded with the estimated values. However, the exchange coupling strength decreased conspicuously with a lower Nd content presumably as a result of an increase in the grain size.",

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author = "Hideaki Ono and Tetsuro Tayu and Norihisa Waki and Tatsuo Sugiyama and Munekatsu Shimada and Makoto Kanou and Akira Fujiki and Hiroshi Yamamoto and Keisuke Takasugi and Masato Tani",

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