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The effect of magnetic interaction between medium and head on perpendicular magnetic recording characteristics

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3 Author(s)
Nakamura, Y. ; Tohoku University, Katahira, Sendai, Japan ; Yamamoto, S. ; Iwasaki, S.

The high density recording characteristics of perpendicular magnetic recording using a single-pole head are affected by the magnetic interaction between the medium and the head. By decreasing the relative thickness of the Co-Cr layer in the double-layer medium to that of the main-pole of the head, and increasing the saturation magnetization of the Co-Cr layer, the high density recording characteristics are enhanced. When requisite conditions are realized, the reproduced voltage vs. bit density characteristics are improved considerably for a thinner main-pole of the single-pole head.

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Magnetics, IEEE Transactions on  (Volume:22 ,  Issue: 5 )