Title :
Chain formation, thermal relaxation and noise in magnetic recording
Author :
Klik, I. ; Yao, Y.D. ; Chang, C.R.
Author_Institution :
Inst. of Phys., Acad. Sinica, Taipei, Taiwan
fDate :
3/1/1998 12:00:00 AM
Abstract :
Thermally activated processes have intrinsically stochastic, exponentially distributed waiting times. A simulation algorithm based on this property is used here to model the effect of a recording head on an initially demagnetized, thermally relaxing particulate medium. Coherent rotation of magnetization and dipolar interactions are assumed and it is found that interactions enhance transition noise and the width of the transition region
Keywords :
magnetic heads; magnetic particles; magnetic recording noise; magnetic relaxation; magnetisation reversal; chain formation; coherent rotation; dipolar interactions; exponentially distributed waiting times; magnetic recording noise; particulate medium; recording head; simulation algorithm; thermal relaxation; thermally activated processes; transition noise; transition region; Atmospheric modeling; Demagnetization; Equations; Magnetic heads; Magnetic noise; Magnetic recording; Metastasis; Physics; Stochastic resonance; Thermal factors;
Journal_Title :
Magnetics, IEEE Transactions on
