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首页> 外文期刊>Magnetics, IEEE Transactions on >Electrostatic Force Manipulation Methodology: Principles, Mechanisms, and Setup for Head–Disk Interactions Monitoring
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Electrostatic Force Manipulation Methodology: Principles, Mechanisms, and Setup for Head–Disk Interactions Monitoring

机译：静电力操纵方法：磁头-磁盘相互作用监视的原理，机制和设置

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摘要

To achieve higher hard disk drive areal density, the head–disk clearance had been reduced to <2 nm recently. Head–disk interaction monitoring with high sensitivity and resolution is desired to monitor the intense interactions at near-contact and to prevent head–disk contact. In this paper, head–disk interaction monitoring based on the electrostatic force manipulation (EFM) principle is discussed. The mechanisms of the two setups to apply alternating electrostatic force () across the head–disk interface were investigated. It was shown that the distribution of the applied was different for the two setups. This led to further studies of the effects of the distribution on interactions monitoring. The results showed that when an alternating was distributed at the pole region, the magnitude of the electrodynamically excited first-harmonic vibration increased significantly as the gap fly height was reduced. It was very sensitive to spacing change and useful for the head–disk interactions monitoring at the near-contact regime. The second harmonic was found sensitive to head–disk contact. When the alternating was distributed at the slider body, the magnitudes of the first and second harmonics were larger due to larger effective surface area. However, the fly height of the slider body was mainly affected by the protrusion push-up effect, and hence the first and second harmonics showed a reverse trend as compared with the case where was distributed at the pole region. In addition, slider pitch motion was also significantly affected. The effective EFM setup was constructed to demonstrate its effectiveness in head–disk interactions monitoring and contact detection.
机译：为了获得更高的硬盘驱动器面密度，最近磁头-磁盘间隙已减小至<2 nm。需要具有高灵敏度和分辨率的磁头-磁盘交互作用监视，以监视近接触处的强烈交互作用并防止磁头-磁盘接触。本文讨论了基于静电力操纵（EFM）原理的磁头-磁盘交互监视。研究了在磁头-磁盘界面上施加交变静电力（）的两种设置的机制。结果表明，两种设置的应用程序分布是不同的。这导致了对分布对交互监视的影响的进一步研究。结果表明，当交变分布在极点区域时，随着间隙飞行高度的减小，电激励的一次谐波振动的幅度显着增加。它对间距变化非常敏感，对于在近接触状态下监视磁头与磁盘的相互作用非常有用。发现二次谐波对磁头-磁盘接触敏感。当交变分布在滑块体上时，由于有效表面积较大，因此一次谐波和二次谐波的幅度较大。但是，滑块主体的浮动高度主要受到突起的上推作用的影响，因此，与在极区分布的情况相比，一次谐波和二次谐波显示出相反的趋势。另外，滑块的俯仰运动也受到显着影响。有效的EFM设置旨在证明其在磁头-磁盘交互作用监视和接触检测中的有效性。

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