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The write field of a ring head for a double layer perpendicular medium

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3 Author(s)
Luitjens, S.B. ; Philips Research Laboratories, JA Eindhoven, The Netherlands ; Smits, J. ; Zieren, V.

The write field of a ring head used with the preferred medium for perpendicular recording (CoCr with an underlayer of softmagnetic material) is discussed and compared with the write field of a Thin- -Film Single Pole (TF-SP) head on the basis of two-dimensional calculations. It is found that the saturation of the underlayer plays an important role in the shape as well as the magnitude of the calculated write field.

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Magnetics, IEEE Transactions on  (Volume:20 ,  Issue: 5 )