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Off-track spacing loss of shielded MR heads

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2 Author(s)
Yuan, S.W. ; Appl. Magnetics Corp., Goleta, CA, USA ; Bertram, H.N.

The side-reading of a finite track-width shielded MR head is investigated both analytically and numerically. The head field (potential) utilized in a reciprocity calculation is obtained, and its Fourier transform is derived in semi-analytic forms. The off-track MR head response to a longitudinally magnetized micro-track and finite-width track is calculated from these results. Estimations on off-track spacing loss are undertaken for two types of shielded MR heads: finite track-width flush MR sensor and shields, and finite-width MR sensor with infinitely wide shields

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Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 3 )