Influences of Thermal Fluctuations on Recorded Magnetizations During Recording Process
Influences of Thermal Fluctuations on Recorded Magnetizations During Recording Process
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记录过程中热波动对记录磁化强度的影响
DOI：
10.1109/intmag.2006.376528
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发表时间：
2006
影响因子：
2.1
通讯作者：
K. Yoshida
中科院分区：
文献类型：
--
作者：
M. Ichida;K. Yoshida
通过计算机模拟研究了记录过程，阐明了在超过2000 kFCI的线性记录密度下磁记录在垂直磁记录中困难的原因。人们发现，即使在记录过程中，记录介质也会遭受强烈的热波动。通过反向磁头场来写入后续位，大大降低了先前记录位的记录磁化强度。数值结果表明，这种减少不是由于正常的记录损失，而是由于SPT头的反向尾随场增强了热波动。根据本文获得的结果，通过降低SPT头的尾场强度，可以实现超过2000 kFCI的记录
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