Title :
Interaction effects and activation volumes in barium ferrite recording media
Author :
El Hilo, M. ; O´Grady, K. ; Chantrell, R.W.
Author_Institution :
SEES, Univ. Coll. of North Wales, Gwynedd, UK
fDate :
11/1/1991 12:00:00 AM
Abstract :
The authors report on the effects of particle interactions in fine barium ferrite particles suitable for use as recording media. They also report on measurements of activation volumes of reversal. From measurements of different pigments, the activation volumes were found to be comparable to the physical size of the particles. However, particle interactions were found to increase the value of the activation volume
Keywords :
barium compounds; ferrites; magnetic hysteresis; magnetic properties of fine particles; magnetic recording; magnetisation reversal; remanence; Ba ferrite fine particles; BaFe12O19; activation volumes; hysteresis; magnetic recording media; magnetisation reversal; particle interactions; particle size; pigments; remanence curve; Barium; Ferrites; Isothermal processes; Magnetic materials; Magnetic recording; Magnetization reversal; Pigments; Remanence; Saturation magnetization; Volume measurement;
Journal_Title :
Magnetics, IEEE Transactions on
