Title :
Remanent magnetisation and demagnetisation measurements on particulate recording media
Author :
Bissell, P.R. ; Chantrell, R.W. ; Tomka, G. ; Knowles, J.E. ; Sharrock, M.P.
Author_Institution :
Sch. of Phys. & Astron., Lancashire Polytech., Preston, UK
fDate :
9/1/1989 12:00:00 AM
Abstract :
The static and dynamic remanence curves of particulate media were studied experimentally in order to clarify the effect of interparticle interactions. The technique is based on a comparison of the remanence curves using as a guide relations derived by consideration of the switching field distribution. Measurements were made using a vibrating-sample magnetometer on samples of tape containing γ-Fe 2O3 particles. The results show a strong dependence of magnetization reversal on the magnetic state, which is consistent with the effects of interactions
Keywords :
iron compounds; magnetic properties of fine particles; magnetic recording; magnetisation; magnetometers; remanence; Fe2O3; demagnetisation; interparticle interactions; magnetisation; magnetization reversal; particulate recording media; remanence curves; switching field distribution; vibrating-sample magnetometer; Demagnetization; Electromagnetic measurements; Extraterrestrial measurements; Isothermal processes; Magnetic field measurement; Magnetic recording; Magnetization reversal; Particle measurements; Remanence; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
