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Direct Solution of Medium Field and Cross-Track Characteristics of Read Sensors

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4 Author(s)
Z. J. Liu ; Data Storage Inst., Singapore ; J. T. Li ; K. S. Chai ; L. Wang

This paper describes a direct calculation method for medium fields in perpendicular recording systems. The method accounts for the effect of the zig-zag transition in the written medium pattern which can be obtained using micromagnetic simulations. The described method is useful for studying the cross-track characteristics of read sensors. The method is able to deal with a recording medium layer with nonunity relative permeability. The computed medium field in the gap region under the read head is compared with that obtained using the finite-element method. The purpose of this study is to develop a fast and effective tool for producing read-back signals based on computer modeling and simulation

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IEEE Transactions on Magnetics  (Volume:42 ,  Issue: 10 )