Abstract
Thermally assisted or hybrid magnetic recording system is expected to be a data storage device with high areal density beyond 1 Tb/in2. Several features of the hybrid recording are treated, such as high resolution recording capability by sharp thermal gradient, and pico-second order high-speed magnetization reversal. Since the hybrid recording solves the head field limit problem, the high magnetic anisotropy (Ku) materials with order of 107 erg/cm3 are used for the hybrid recording media. We discuss the candidates of the high Ku materials, FePt and CoPt L10 ordered alloy, Tb-Fe-Co amorphous, and Co/Pd multilayer thin films.
