Title :
Simulations of Recording in Composite Media
Author :
Greaves, Simon ; Muraoka, Hiroaki
Author_Institution :
RIEC, Sendai
Abstract :
Composite media, with recording layers consisting of magnetically hard and soft layers were compared with conventional, single layer media using simulations. The difference in the angular variation of switching fields, while large at low temperatures, was much reduced at room temperature. Tracks recorded on composite media can have higher signal-to-noise ratio and/or higher thermal stability than those written on single layer media. Intergranular exchange coupling narrowed the difference between the two media
Keywords :
composite materials; magnetic recording; magnetic switching; soft magnetic materials; thermal stability; composite media; intergranular exchange coupling; magnetically hard layers; magnetically soft layers; recording layers; signal-to-noise ratio; single layer media; switching fields; thermal stability; Energy barrier; Magnetic anisotropy; Magnetic heads; Magnetic recording; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Soft magnetic materials; Temperature; Thermal stability; Composite media; perpendicular magnetic recording; simulation;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878666
