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Micromagnetic studies of disk drive servo performance for ultra-high density magnetic recording

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3 Author(s)
Champion, E. ; Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA ; Kadlec, R. ; Bertram, H.N.

A combined head-medium micromagnetic model is used to analyze servo systems for 10 Gbit/in2 recording. Servo patterns are recorded using a micromagnetic medium model to accurately describe the edge-track and noise phenomena. A micromagnetic spin-valve model is then used to replay the recorded information and obtain the position error signal (PES) as a function of off-track position. The results show that the PES linearity is a strong function of the write gap width and deep gap field

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )