Micromagnetic modeling of discrete patterned perpendicular media

Smooth discrete track media fabricated by focused ion beam

“…Vieu et al 4 have attributed the suppression in magnetic properties in Co/ Pt/ Co multilayers to structural damage caused by collisional interlayer mixing. At these low doses where media surface etching was minimal, Ga + ion bombardment can affect the magnetic properties of the media through a combination of the following reasons: ͑i͒ Ga + ions are implanted as nonmagnetic impurities in the film.…”