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 journalArticle

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 languageEnglish
Pages (from-to)141-145
Number of pages5
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume49
Issue number2
Publication statusPublished - 2002 Feb
Externally publishedYes

Fingerprint

Rare earths
Magnets
Magnetic properties
Exchange coupling
Spark plasma sintering
Magnetic structure
Saturation magnetization
Raw materials

Keywords

  • α-Fe/NdFeB type exchange-spring magnets
  • 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

ASJC Scopus subject areas

  • Mechanical Engineering
  • Metals and Alloys

Cite this

Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd2Fe14B type bulk exchange-spring magnets. / Ono, Hideaki; Tayu, Tetsuro; Waki, Norihisa; Sugiyama, Tatsuo; Shimada, Munekatsu; Kanou, Makoto; Fujiki, Akira; Yamamoto, Hiroshi; Takasugi, Keisuke; Tani, Masato.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 49, No. 2, 02.2002, p. 141-145.

Research output: Contribution to journalArticle

Ono, Hideaki ; Tayu, Tetsuro ; Waki, Norihisa ; Sugiyama, Tatsuo ; Shimada, Munekatsu ; Kanou, Makoto ; Fujiki, Akira ; Yamamoto, Hiroshi ; Takasugi, Keisuke ; Tani, Masato. / Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd2Fe14B type bulk exchange-spring magnets. In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 2002 ; Vol. 49, No. 2. pp. 141-145.
@article{343dbd80c6594213a5dfbdf6c94afcdf,
title = "Magnetic properties of low rare-earth content (Nd = 2 - 7 at.{\%}) α-Fe/Nd2Fe14B type bulk exchange-spring magnets",
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.",
keywords = "α-Fe/NdFeB type exchange-spring magnets, 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",
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",
year = "2002",
month = "2",
language = "English",
volume = "49",
pages = "141--145",
journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",
issn = "0532-8799",
publisher = "Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy",
number = "2",

}

TY - JOUR

T1 - Magnetic properties of low rare-earth content (Nd = 2 - 7 at.%) α-Fe/Nd2Fe14B type bulk exchange-spring magnets

AU - Ono, Hideaki

AU - Tayu, Tetsuro

AU - Waki, Norihisa

AU - Sugiyama, Tatsuo

AU - Shimada, Munekatsu

AU - Kanou, Makoto

AU - Fujiki, Akira

AU - Yamamoto, Hiroshi

AU - Takasugi, Keisuke

AU - Tani, Masato

PY - 2002/2

Y1 - 2002/2

N2 - 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.

AB - 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.

KW - α-Fe/NdFeB type exchange-spring magnets

KW - Bulk exchange-spring magnets

KW - Low rare-earth content (Nd = 2 - 7 at.%)

KW - Magnetic properties

KW - Nd-Fe-Co-V-B system alloys

KW - Spark Plasma Sintering (SPS) method

UR - http://www.scopus.com/inward/record.url?scp=0036478272&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036478272&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0036478272

VL - 49

SP - 141

EP - 145

JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

SN - 0532-8799

IS - 2

ER -