Numerical modeling of heat assisted magnetic recording system

Heat assisted magnetic recording (HAMR) is envisioned as the next technology for boosting the recording densities. In HAMR, a localized optical field is used to locally heat the magnetic recording media layer, thus reducing the thermal stability and allowing recording at sufficiently weak magnetic fields. After cooling down, the recording layer restores the original high thermal stability. From the simulation point of view HAMR requires integrated modeling approaches, including magnetics, optics, heat transport, and electromagnetics.