ANHYSTERETIC SUSCEPTIBILITY AND STATIC MAGNETIC-PROPERTIES OF INTERACTING SMALL PARTICLES

The strength and sign of interparticle interactions largely determine the anhysteretic susceptibility of strongly interacting systems, and correlate with the measured switching field distributions. Platelets of doped barium-ferrite display evidence of positive interactions in their static magnetization behaviour and there is a correspondingly large anhysteretic susceptibility. This makes barium ferrite a suitable material for anhysteretic tape duplication, but may, via the re-record mechanism be deleterious to the overwrite performance. © 1990 IEEE