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2-dimensional observation of recorded magnetization transitions in perpendicular recording

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3 Author(s)
Sueoka, K. ; IBM Tokyo Res. Lab., Tokyo, Japan ; Sai, F. ; Ashar, K.G.

Two-dimensional magnetic transition shapes written in a perpendicular recording medium were studied using a large-scale model which simulates a system consisting of a single-pole head and a double-layer medium. The magnetization distribution shapes are calculated from the measured stray field distribution on the surface of the recording medium. The authors describe the experimental method and the results derived for a large-scale medium. They observed a tail-like structure at the corner of the track and transition edges along the track, which can be interpreted as the effect of the demagnetization field from the DC-erased magnetization. The shape of the track edge is similar to that of the transition edge, which suggests that perpendicular recording is suitable for narrow-track recording

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Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 5 )