Title :
Analytic and micromagnetic predictions of neighbor-induced transition shift
Author :
Yoseph, Sissay G. ; Victora, R.H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA
fDate :
7/1/2004 12:00:00 AM
Abstract :
An analytic formula to predict the bit transition shift due to the magnetostatic field generated by neighboring written tracks is derived. In order to test this theory, we have employed a micromagnetic simulation including recording head, soft underlayer and Voronoi cell-based recording layer. This neighbor-induced transition shift scales worse than linearly with the density of the recording medium, reaching ∼70% at 1 terabit/in2 in worst case scenarios such as dc-erased media.
Keywords :
magnetic heads; magnetostatics; micromagnetics; perpendicular magnetic recording; soft magnetic materials; Voronoi cell-based recording layer; bit transition shift prediction; dc-erased media; magnetostatic field generation; micromagnetic prediction; micromagnetic simulation; neighbor-induced transition shift; neighboring written tracks; perpendicular recording; recording head; recording medium; soft underlayer; Equations; Geometry; Magnetic analysis; Magnetic heads; Magnetic separation; Magnetostatics; Micromagnetics; Perpendicular magnetic recording; Saturation magnetization; Writing; Micromagnetics; NITS; neighbor-induced transition shift; perpendicular recording;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.828986
