Comparison of track edge noise between oriented and isotropic thin film media in quasi-contact magnetic recording

By utilizing a micro-magnetic simulation model, the track edge noise is analyzed versus the head–media spacing in two different media. This study shows that although the track edge noise decreases with the head–media spacing within a normal range (27–69nm), there is an unexpected slight increase in the track edge noise for lowering head–media spacing in the proximity and contact recording range around 6nm, which brings a significant influence on the contact recording performance with a narrow track.