Role of M-H loop slope of media for recording properties in perpendicular magnetic recording

Akita Res. Inst. of Adv. Technol.
IEEE Transactions on Magnetics (Impact Factor: 1.42). 10/2002; DOI: 10.1109/TMAG.2002.801821
Source: IEEE Xplore

ABSTRACT Perpendicular magnetic recording media with a high resolution and a low noise property were studied using a micromagnetic simulation. It was suggested that the introduction of a small separation between the adjacent grains is effective to obtain such media increasing the perpendicular M-H loop slope without increasing the domain size. The separation is thought to reduce the demagnetizing field acting on the magnetic grains increasing the M-H loop slope of the grains.

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