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Cross-track transition location and transition parameter effects in heat-assisted magnetic recording

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3 Author(s)
Erden, M.F. ; Seagate Technol., Pittsburgh, PA, USA ; Rausch, T. ; Challener, W.A.

When conventional longitudinal and perpendicular magnetic recording architectures reach their well-known superparamagnetic limits, one candidate to break through the limit is heat-assisted magnetic recording (HAMR). In this paper, we investigate the effect of cross-track transition location and transition parameter (a-parameter) profiles in an HAMR system. Here, we apply microtrack modeling and the thermal Williams-Comstock model to longitudinal recording to determine the transition location and a-parameter profiles along the cross-track direction in the presence of a temperature profile. We then explore the effect of temperature on the isolated transition response of the system.

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Magnetics, IEEE Transactions on  (Volume:41 ,  Issue: 6 )