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Influences of Thermal Fluctuations on Recorded Magnetizations During Recording Process

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2 Author(s)
Ichida, M. ; Aga Sekkei Kogyo Co. Ltd., Tochigi ; Yoshida, K.

The recording process is examined by computer simulation to clarify the reason why magnetic recording at a linear recording density of over 2000 kFCI is difficult in perpendicular magnetic recording. The recording medium is found to suffer from strong thermal fluctuations, even during the recording process. The recorded magnetization of the preceding recorded bit is decreased considerably by the reversed head field to write the succeeding bit. Numerical results show that this decrease is not due to normal recording loss, but rather to the thermal fluctuations that is enhanced by the reversed trailing field of the SPT head. Based on the results obtained herein, recording at over 2000 kFCI is believed to be possible by reducing the trailing field strength of the SPT head

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Magnetics, IEEE Transactions on  (Volume:42 ,  Issue: 10 )