Title :
Transverse susceptibility and anisotropy fields of iron-oxide pigments
Author_Institution :
Bayer AG, Krefeld, Germany
fDate :
11/1/1991 12:00:00 AM
Abstract :
The transverse susceptibility of oriented iron oxide samples was measured. The results are in qualitative agreement with theoretical curves. From singular points of the transverse susceptibility the anisotropy fields of the pigments were determined. For Co-free pigments these agree well with the chain of spheres model. The anisotropy fields of the Co-modified pigments depend significantly on the kind of modification. This is interpreted with differences in the strength of uniaxiality of the anisotropy
Keywords :
cobalt; ferrimagnetic properties of substances; ferrites; iron compounds; magnetic anisotropy; magnetic properties of fine particles; magnetic recording; magnetic susceptibility; Fe2O3 pigment; Fe2O3:Co; Fe3O4; Fe3O4:Co; anisotropy fields; ferromagnetism; magnetic pigments; magnetic recording; oriented particles; transverse susceptibility; uniaxial particles; Anisotropic magnetoresistance; Barium; Coatings; Iron; Magnetic anisotropy; Magnetic domains; Magnetic field measurement; Perpendicular magnetic anisotropy; Pigments; Powders;
Journal_Title :
Magnetics, IEEE Transactions on
