2019
DOI: 10.1063/1.5119407
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Improving the signal-to-noise ratio for heat-assisted magnetic recording by optimizing a high/low Tc bilayer structure

Abstract: We optimize the recording medium for heat-assisted magnetic recording by using a high/low T c bilayer structure to reduce AC and DC noise. Compared to a former work, small Gilbert damping α = 0.02 is considered for the FePt like hard magnetic material. Atomistic simulations are performed for a cylindrical recording grain with diameter d = 5 nm and height h = 8 nm. Different soft magnetic material compositions are tested and the amount of hard and soft magnetic material is optimized. The results show that for a… Show more

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Cited by 4 publications
(1 citation statement)
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“…Atomistic models provide this level of detail and have been used to provide temperature dependent magnetic properties and reversal mechanisms in recording media [5,6,7,8,9,10,11,12,13,14]. Although atomistic simulations can provide exceptional detail of the underlying physical processes which govern their macroscopic properties these simulations carry a significant computational cost.…”
Section: Introductionmentioning
confidence: 99%
“…Atomistic models provide this level of detail and have been used to provide temperature dependent magnetic properties and reversal mechanisms in recording media [5,6,7,8,9,10,11,12,13,14]. Although atomistic simulations can provide exceptional detail of the underlying physical processes which govern their macroscopic properties these simulations carry a significant computational cost.…”
Section: Introductionmentioning
confidence: 99%