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Dynamic Write/Read Characteristics of Alumina Nanohole Patterned Media With a Soft Underlayer Measured With a Perpendicular Magnetic Head

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11 Author(s)
Oshima, H. ; Yamagata Fujitsu, Ltd, Higashine ; Kikuchi, H. ; Nakao, Hiroshi ; Kamimura, T.
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We present dynamic write/read characteristics of alumina nanohole patterned media having a soft magnetic underlayer (SUL), which offer good flyability of a perpendicular magnetic head with a flight height of 10 nm. Increase in the head-field gradient in the recording layer owing to the SUL was confirmed by measurements of signal-to-noise ratio and isolated magnetic transition width. The writability of the magnetic nanopillars was clearly demonstrated by visualization of the recorded patterns with a magnetic force microscope

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Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 6 )