Title :
Perpendicular recording model of medium and head field saturation effects
Author :
Plumer, Martin ; van Ek, Jan
Author_Institution :
Seagate Technol., Bloomington, MN, USA
fDate :
9/1/2002 12:00:00 AM
Abstract :
A previously developed micromagnetic recording model is extended here for perpendicular recording media with a soft under layer. Write head field saturation effects are examined and shown to have a severely detrimental effect on the quality of recorded transitions. An extension of the model to account for a source of medium switching field distribution is used to study the degradation of amplitude and medium SNR with increasing linear density.
Keywords :
grain size; magnetic heads; magnetic recording noise; magnetic switching; perpendicular magnetic recording; soft magnetic materials; amplitude degradation; linear density; medium SNR; medium switching field distribution; micromagnetic recording model; perpendicular recording model; recorded transition quality; soft under layer; write head field saturation effects; Anisotropic magnetoresistance; Degradation; Grain size; Magnetic anisotropy; Magnetic heads; Micromagnetics; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Space vector pulse width modulation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802697
