Preparation and magnetic properties of Fe-Co fine particles

Author

Kishimoto, M. ; Nakazumi, T. ; Otani, N. ; Sueyoshi, T.

Author_Institution

Hitachi Maxell Ltd., Kyoto, Japan

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

4645

Lastpage

4647

Abstract

Fe-Co fine particles with high Co content were prepared by reducing Co-substituted iron oxide particles. The saturation magnetization of the particles increased with Co concentration. The saturation magnetization was 153.8 emu/g with 15.0 wt.% Co content compared to 133.0 emu/g for iron particles with the same surface area. The Fe-Co particles showed superior corrosion resistance compared to iron particles. A Co-ferrite layer formed on the surface of the particles helped minimize the progress of the oxidation

Keywords

X-ray chemical analysis; X-ray diffraction examination of materials; X-ray photoelectron spectra; cobalt alloys; coercive force; corrosion; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic properties of fine particles; magnetic recording; magnetisation; materials preparation; reduction (chemical); Co-Fe₃O₄ particles reduction; Co-ferrite layer; Fe-Co fine particles; X-ray diffraction; XPS analysis; anisotropy field distribution; coercivity; corrosion resistance; ferromagnetism; magnetic properties; magnetic recording; metal particulate tapes; oxidation; saturation magnetization; Artificial intelligence; Corrosion; Hydrogen; Iron; Magnetic anisotropy; Magnetic properties; Perpendicular magnetic anisotropy; Saturation magnetization; Shape; Surface resistance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278903

Filename

278903