Title :
Induced anisotropy in fine particles for magnetic recording
Author :
Mollard, P. ; Tailhades, P. ; Rousset, A.
Author_Institution :
Lab. Louis Neel, Grenoble, France
fDate :
1/1/1990 12:00:00 AM
Abstract :
An automatic apparatus allows fast studies of magnetic annealing and thermal variations of coercive force and remanent magnetization in cobalt substituted γ-Fe2O3 particles for magnetic recording. Experimental results are interpreted with Neel´s model (1954) of directional order. The model and results permit an understanding of the origin of surface anisotropy of surface cobalt doped particles
Keywords :
cobalt; coercive force; ferrites; induced anisotropy (magnetic); iron compounds; magnetic annealing; magnetic properties of fine particles; magnetic recording; remanence; Co-Fe2O3; Neel model; automatic apparatus; coercive force; directional order; fine particles; gamma phase; induced anisotropy; magnetic annealing; magnetic recording; remanent magnetization; surface anisotropy; Anisotropic magnetoresistance; Annealing; Magnetic anisotropy; Magnetic field measurement; Magnetic fields; Magnetic recording; Magnetization; Magnetosphere; Perpendicular magnetic anisotropy; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
