I.A. Beardsley
IEEE Transactions on Magnetics
A simple continuum model and a discrete model are proposed in order to examine the issue of the existence of sharp transitions in perpendicular recording. Both approaches, even though fundamentally different, give a range of material parameters where transition sharpness is limited only by exchange. In the discrete model the head field gradient determines the sharpness of an isolated transition. However, when a periodic pattern is considered the optimization of the head depends critically on the density and magnetization regime.
I.A. Beardsley
IEEE Transactions on Magnetics
C. Tsang, I.A. Beardsley
Journal of Magnetism and Magnetic Materials
C. Tsang, Yaw-shing Tang
IEEE Transactions on Magnetics
C. Michael Jefferson, I.A. Beardsley
Journal of Applied Physics