磁気ディスク面のマイクロウェイビネスが電磁変換の振幅変調特性に与える影響

概要

論文の詳細を見る
Micro-waviness has been defined in the hard disk industry as the amplitude component just between roughness and waviness wavelength. The disk micro-waviness may cause microscopic fluctuation in the head/disk spacing and so a special attention is paid to the relationship between the two properties. From an engineering standpoint that the spacing fluctuation might result in amplitude modulation of head readout signal, a number of hard disks that have various micro-waviness components were prepared in order to investigate the correlation between the disk micro-waviness and the head readout signal. The experimental analysis showed that the average amplitude of disk micro-waviness is well correlated to the amplitude modulation of the head readout signal in a certain wavelength band. A method to estimate the longer wavelength limit of micro-waviness as well as readout signal was also presented.
公益社団法人精密工学会の論文
2001-06-05