Title :
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
fDate :
11/1/1991 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
