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MFM observation of magnetization reversal process in recording media with lithographically defined texture

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6 Author(s)
Hsu, C.-C. ; Magnetics & Inf. Sci. Center, Washington Univ., St. Louis, MO, USA ; Indeck, R.S. ; Jander, A. ; Muller, M.W.
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Periodically textured magnetic recording media with different groove depths are investigated. A spatial map of the variation in the switching field and switching field distribution are derived from a series of MFM images. When the reversing field is applied along the texture, long chains of reversal are formed and channeled by the texture grooves. Most grains switch within a relatively small range of applied fields. For fields applied transverse to the texture, short chains of reversal form along the textured grooves, and switching occurs over a broader applied field range

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Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )