Hard magnetic properties of melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B nanocrystalline alloys with L10 structure

Masahiro Makabe; Mai Nakagawa; Teruo Bitoh; Akihiro Makino

doi:10.1016/j.jmmm.2006.11.016

Hard magnetic properties of melt-spun (Fe_0.55Pt_0.45)-(Nb, Ti)-B nanocrystalline alloys with L1₀ structure

Masahiro Makabe, Mai Nakagawa, Teruo Bitoh, Akihiro Makino

New Industry Creation Hatchery Center (NICHe)

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

1 Citation (Scopus)

Abstract

The hard magnetic properties and the structure of the melt-spun (Fe_0.55Pt_0.45)-(Nb, Ti)-B alloys have been investigated. The almost single L1₀-FePt structure was directly formed in the wide compositional range of 2-10 at% Nb and 15-24 at% B, and 2-6 at% Ti and 3-20 at% B, respectively. The highest H_c values are 588 kA/m for (Fe_0.55Pt_0.45)₇₂Nb₈B₂₀ and 357 kA/m for (Fe_0.55Pt_0.45)₈₃Ti₂B₁₅, respectively. The rapidly quenching the melt is useful to realize the good hard magnetic properties through the grain size refinement of the near equi-atomic FePt alloys.

Original language	English
Pages (from-to)	e855-e857
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 3
DOIs	https://doi.org/10.1016/j.jmmm.2006.11.016
Publication status	Published - 2007 Mar 1

Keywords

Hard magnetic properties
Iron-platinum alloy
Melt-spinning technique
Ordered L1 phase

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Hard magnetic properties of melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B nanocrystalline alloys with L10 structure",

abstract = "The hard magnetic properties and the structure of the melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B alloys have been investigated. The almost single L10-FePt structure was directly formed in the wide compositional range of 2-10 at% Nb and 15-24 at% B, and 2-6 at% Ti and 3-20 at% B, respectively. The highest Hc values are 588 kA/m for (Fe0.55Pt0.45)72Nb8B20 and 357 kA/m for (Fe0.55Pt0.45)83Ti2B15, respectively. The rapidly quenching the melt is useful to realize the good hard magnetic properties through the grain size refinement of the near equi-atomic FePt alloys.",

keywords = "Hard magnetic properties, Iron-platinum alloy, Melt-spinning technique, Ordered L1 phase",

author = "Masahiro Makabe and Mai Nakagawa and Teruo Bitoh and Akihiro Makino",

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T1 - Hard magnetic properties of melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B nanocrystalline alloys with L10 structure

AU - Makabe, Masahiro

AU - Nakagawa, Mai

AU - Bitoh, Teruo

AU - Makino, Akihiro

PY - 2007/3/1

Y1 - 2007/3/1

N2 - The hard magnetic properties and the structure of the melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B alloys have been investigated. The almost single L10-FePt structure was directly formed in the wide compositional range of 2-10 at% Nb and 15-24 at% B, and 2-6 at% Ti and 3-20 at% B, respectively. The highest Hc values are 588 kA/m for (Fe0.55Pt0.45)72Nb8B20 and 357 kA/m for (Fe0.55Pt0.45)83Ti2B15, respectively. The rapidly quenching the melt is useful to realize the good hard magnetic properties through the grain size refinement of the near equi-atomic FePt alloys.

AB - The hard magnetic properties and the structure of the melt-spun (Fe0.55Pt0.45)-(Nb, Ti)-B alloys have been investigated. The almost single L10-FePt structure was directly formed in the wide compositional range of 2-10 at% Nb and 15-24 at% B, and 2-6 at% Ti and 3-20 at% B, respectively. The highest Hc values are 588 kA/m for (Fe0.55Pt0.45)72Nb8B20 and 357 kA/m for (Fe0.55Pt0.45)83Ti2B15, respectively. The rapidly quenching the melt is useful to realize the good hard magnetic properties through the grain size refinement of the near equi-atomic FePt alloys.

KW - Hard magnetic properties

KW - Iron-platinum alloy

KW - Melt-spinning technique

KW - Ordered L1 phase

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