Abstract
Thermal fluctuations in magnetization of longitudinal and perpendicular magnetic recording media was calculated using the Monte Carlo simulation method. From the simulation results and by considering that thick media (>30 nm) can be used in perpendicular recording, we concluded that perpendicular recording is superior to longitudinal recording in terms of thermal fluctuations. Signal dccay duc to thcrmal fluctuations incrcascs with increasing grain size distribution when decay is small, but decreases with increasing grain size distribution when decay is large. The signal decay is larger at higher density in longitudinal recording, and it is smaller at higher density in perpendicular recording.
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