Polyol Process for Fe-Based Hard(fct-FePt) and Soft(FeCo) Magnetic Nanoparticles

Author

Jeyadevan, B. ; Shinoda, K. ; Justin, R.J. ; Matsumoto, T. ; Sato, K. ; Takahashi, H. ; Sato, Y. ; Tohji, K.

Author_Institution

Graduate Sch. of Environ. Studies, Tohoku Univ.

Volume

42

Issue

10

fYear

2006

Firstpage

3030

Lastpage

3035

Abstract

The polyol process and the parameters influencing the synthesis of metal and alloy nanoparticle are discussed. Then, the synthesis strategies to obtain hard (Fe-Pt) and soft (Fe-Co) nanoparticles by using polyol process is presented. Under optimum synthesis conditions, partially ordered Fe-Pt nanoparticles with an average grain diameter of 8 nm exhibited a coercivity of 460 kA/m in the as-synthesized state. In the case of Fe-Co alloy particles, synthesis technique to prepare particles with varying Fe concentration in the size ranging between 300 and 50 nm is reported

Keywords

cobalt alloys; coercive force; iron alloys; magnetic particles; nanoparticles; permanent magnets; soft magnetic materials; 8 nm; Fe-Co alloy particles; Fe-based hard magnetic nanoparticles; Fe-based soft magnetic nanoparticles; FeCo; FePt; alloy nanoparticle; metal nanoparticle; partially ordered Fe-Pt nanoparticles; polyol process; Coercive force; Helium; Inorganic materials; Iron alloys; Magnetic materials; Magnetic properties; Nanoparticles; Oxidation; Soft magnetic materials; Temperature; Co alloys; FeCo; FePt; polyol process; soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.880149

Filename

1704519