Title :
A simple slope model for oriented and isotropic longitudinal media
Author :
Richter, Hans Jürgen ; Sandler, Gene M. ; Girt, Erol
Author_Institution :
Seagate Recording Media, Fremont, CA, USA
Abstract :
A simple model to predict the effect of medium orientation of longitudinal media on the transition sharpness is reported. It is shown that a traditional slope model can be suitably modified by multiplying the total field gradient with the medium squareness to reflect the loss in effective field gradient due to reversible magnetization rotations. The results agree well with experimental data.
Keywords :
magnetic heads; magnetic recording; effective field gradient; isotropic longitudinal media; longitudinal recording media; medium orientation; medium squareness; oriented longitudinal media; reversible magnetization rotations; signal-to-noise ratio; slope model; total field gradient; transition sharpness; Anisotropic magnetoresistance; Demagnetization; Disk recording; Magnetic anisotropy; Magnetic field measurement; Magnetic heads; Magnetic recording; Perpendicular magnetic anisotropy; Predictive models; Saturation magnetization; 65; Longitudinal recording media; SNR; oriented media; signal-to-noise ratio; slope model;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.829292
