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Heat assisted magnetic recording (HAMR) can overcome the super-paramagnetic limit and increase areal density beyond 1 Tb/in2 in hard disk drives [1]. In HAMR, a pulsed laser beam is first used to heat the magnetic medium beyond its Curie temperature and then data is magnetically recorded during the cool-down process while the coercivity of the medium is still low. High temperatures at the head disk...
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