Title :
Fluctuation fields of recording media particles, the role of anisotropy dispersion
Author :
El-Hilo, M. ; O´Grady, K. ; Pfeiffer, H. ; Chantrell, R.W. ; Veitch, R.J.
Author_Institution :
Univ. Coll. of North Wales, Bangor, UK
fDate :
9/1/1992 12:00:00 AM
Abstract :
The authors report on the field variation of the fluctuation field (Hf) in recording media. From theoretical calculations the field variation of Hf is found to be governed by the distribution of particle volumes and the distribution of anisotropy fields. The decrease in Hf arises from the volume distribution, while the presence of an anisotropy distribution results in an increase in Hf. Thus, when these two effects are present in the sample, the field variation of Hf exhibits a minimum
Keywords :
magnetic anisotropy; magnetic fields; magnetic properties of fine particles; magnetic recording; CrO2; Fe2O3:Co; anisotropy dispersion; anisotropy field distribution; field variation; fluctuation field; particle volume distribution; recording media particles; Anisotropic magnetoresistance; Energy barrier; Fluctuations; Hafnium; Magnetic field measurement; Magnetic materials; Magnetic recording; Physics; Saturation magnetization; Time measurement;
Journal_Title :
Magnetics, IEEE Transactions on
