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Fast Calculation of Read Field From Perpendicular Recording Medium Using Head Characteristic Matrix

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4 Author(s)
Suzuki, Y. ; Res. Inst. of Electr. Commun., Sendai ; Aoi, H. ; Muraoka, H. ; Nakamura, Y.

A very fast calculation method of calculating the three-dimensional read head field from a perpendicular recording medium is presented using a head characteristic matrix K, and the medium charge with a spacing loss correction. The numerical integration in the evaluation of the matrix can be replaced with an infinite sum, speeding up the calculation significantly. The head characteristic matrix has a physical significance as the inverse matrix of the self-magnetostatic energy with a charge placed on the air bearing surface (ABS) of the read gap

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