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

2007; IEEE Magnetics Society; Volume: 43; Issue: 6 Linguagem: Inglês

10.1109/tmag.2007.893127

1941-0069

Hirotaka Oshima, Hideyuki Kikuchi, Hiroshi Nakao, Takuya Kamimura, Takeshi Morikawa, Koji Matsumoto, Jianfeng Yuan, S. Ishio, Kazuyuki Nishio, Hideki Masuda, Ken‐ichi Itoh,

Fluid Dynamics and Thin Films

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