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Bit-Percolation Studies on CoPtCr–SiO2 Perpendicular Magnetic-Recording Media

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4 Author(s)
Kitano, M. ; Mater. Sci. & Adv. Devices, NHK Sci. & Tech. Res. Labs., Tokyo ; Miyashita, E. ; Hayashi, N. ; Takenoiri, S.

Bit percolation degrades the performance of high-density perpendicular magnetic recording. The magnetic cluster size determines the limit of the recordable bit length. In order to examine the parameter, which influences the high-density recording characteristics, we have investigated the relationship between magnetic cluster size and the recording bit length at which bit percolation begins to occur in a CoPtCr-SiO2 perpendicular magnetic-recording medium to the range of 1500 kfci. Our experimental data indicate that the onset of bit percolation takes place at a recording bit length close to the magnetic cluster size of the medium

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