An iterative hysteretic model for digital magnetic recording

An iterative hysteretic model is presented which calculates the magnetization distribution in a thin magnetic layer for digital recording systems. The model considers the effects of the head field, self-demagnetization fields, and induced image fields. A complete hysteresis loop model is also presented. Write-field asymmetry is observed. It is found that the inclusion of the image fields significantly sharpens the transition region.