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We have studied the effect of thermal fluctuations on the transition jitter of a perpendicular recording system using a micromagnetic recording model. A stochastic thermal field term is added to the total effective field in the Landau-Lifshitz-Gilbert equation of motion to simulate thermal fluctuations. The recording model uses a head field generated by a finite element model in the presence of a soft underlayer. A Monte Carlo simulation of 300 isolated transitions is done to calculate the variation in transition jitter. Transition jitter is significantly increased in the presence of a stochastic thermal field for different media parameters. Our results highlight that the thermal fluctuation fields must be included in a realistic assessment of the system performance.
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Batra et al. (2006) studied this question.
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