Synthesis of fe-co alloy particles by modified polyol process

D. Kodama; Yoshinori Sato; B. Jeyadevan; Kazuyuki Tohji; Kozo Shinoda; K. Sato

doi:10.1109/TMAG.2006.880072

Synthesis of fe-co alloy particles by modified polyol process

D. Kodama, Yoshinori Sato, B. Jeyadevan, Kazuyuki Tohji, Kozo Shinoda, K. Sato

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

23 Citations (Scopus)

Abstract

The successful synthesis of Fe-Co nanoparticles by using a modified polyol process is reported. The formation of the alloy nanoparticles was confirmed by X-ray diffraction and X-ray extended absorption fine structure analyses. The concentration of iron in these particles could be varied between 40% and 90% by controlling the reaction conditions such as initial Fe/Co ratio, reaction temperature and hydroxyl ion concentration. The shape of the particles changed from spherical to cubic when the concentration of Fe was increased from 40 to above 60 at. %. The highest magnetization of 225 emu/g was recorded for Fe₇₀Co₃₀ nanoparticles. The magnetization of these particles decreased by about 20% when exposed to severe oxidizing atmosphere for seven days.

Original language	English
Pages (from-to)	2796-2798
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.880072
Publication status	Published - 2006 Jan 1

Keywords

Chemical synthesis
Fe-Co nanoparticles
polyol process
soft magnetic materials

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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abstract = "The successful synthesis of Fe-Co nanoparticles by using a modified polyol process is reported. The formation of the alloy nanoparticles was confirmed by X-ray diffraction and X-ray extended absorption fine structure analyses. The concentration of iron in these particles could be varied between 40% and 90% by controlling the reaction conditions such as initial Fe/Co ratio, reaction temperature and hydroxyl ion concentration. The shape of the particles changed from spherical to cubic when the concentration of Fe was increased from 40 to above 60 at. %. The highest magnetization of 225 emu/g was recorded for Fe70Co30 nanoparticles. The magnetization of these particles decreased by about 20% when exposed to severe oxidizing atmosphere for seven days.",

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AU - Kodama, D.

AU - Sato, Yoshinori

AU - Jeyadevan, B.

AU - Tohji, Kazuyuki

AU - Shinoda, Kozo

AU - Sato, K.

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AB - The successful synthesis of Fe-Co nanoparticles by using a modified polyol process is reported. The formation of the alloy nanoparticles was confirmed by X-ray diffraction and X-ray extended absorption fine structure analyses. The concentration of iron in these particles could be varied between 40% and 90% by controlling the reaction conditions such as initial Fe/Co ratio, reaction temperature and hydroxyl ion concentration. The shape of the particles changed from spherical to cubic when the concentration of Fe was increased from 40 to above 60 at. %. The highest magnetization of 225 emu/g was recorded for Fe70Co30 nanoparticles. The magnetization of these particles decreased by about 20% when exposed to severe oxidizing atmosphere for seven days.

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