Transition Jitter Simulations of Heat Assisted Magnetic Recording at Areal Density of 4.1 Tb/in22
Keywords:
Transition Jitter, Heat assisted magnetic recording, Magnetic footprintsAbstract
The transition jitter is one form of noise and the transition jitter is used to indicate the performance of the magnetic recording process. In this paper, the transition jitter is simulated in two-dimension (2-D) format of the heat assisted magnetic recording (HAMR) technology. HAMR technology is among the candidates for increasing areal density. The micromagnetic simulations based on
the Landau-Lifshitz-Gillbert (LLG) equation and MATLAB was used for calculation and the transition jitter simulation. Voronoi pattern model was used as the medium and an average grain size of 5.1 nm.
Bit length and track width were considered at the areal density of 4.1 Tb/in2. It was found that the minimum transition jitter is 1.679 nm at bit length of 8 nm and track width of 19.5 nm.
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