Track Edge Noise In Isotropic And Oriented Media For Proximity And Contact Magnetic Recording

In the magnetic recording process, both the transition length and the spacing loss will be reduced with a lower head-med& spacing, thus allowing higger linear densities Utilizing a micromagnetic simulation model, the track edge noise is analyzed versus the head-medium spacing in two different media. This study shows that although the track edge noise decreases with the head-medium spacing within a normal range (d= 27-69 nm), there is an unexpected slight increase in the track edge noise for lowering head-medium spacing in the proximity and contact recording range d= 6-27 nm, which brings a significant influence on the contact recording performance with a narrow track.