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Simulation of the perpendicular recording process including image charge effects

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2 Author(s)
M. Beusekamp ; Twente University of Technology, Enschede, Netherlands ; J. Fluitman

This paper presents a complete model for the perpendicular recording process in single-pole-head keeper-layer configurations. It includes the influence of the image-charge distributions in the head and the keeper layer. Based on calculations of magnetization distributions in standstill situations, the model describes the relaxation process that takes place if the activated head is shifted along the recording layer, periodically switching its head field. The magnetization distributions thus derived are used in combination with a model for the readback process to calculate the readback flux and voltage pulses. For the sake of arithmetical convenience, the model was applied to a recording configuration with a thick single-pole head, but it can also be used for calculations with other head shapes, e.g. thin single-pole heads.

Published in:

IEEE Transactions on Magnetics  (Volume:22 ,  Issue: 5 )