Experimental Study of the Slider-Lube/Disk Contact State and Its Effect on Head-Disk Interface Stability

Experimental Study of the Slider-Lube/Disk Contact State and Its Effect on Head-Disk Interface Stability
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滑块-润滑油/磁盘接触状态及其对磁头-磁盘界面稳定性影响的实验研究

DOI:
10.1109/tmag.2012.2190615
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发表时间:
2012-03
影响因子:
2.1
通讯作者:
Bogy, David B.
Bogy, David B.
中科院分区:
工程技术4区
文献类型:
--
作者:
Li, Ning;Meng, Yonggang;Bogy, David B.

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由于磁头-磁盘间隙已减小到近1 nm,并且部分润滑油接触磁头-磁盘界面(HDI)甚至可能需要满足未来的磁间距需求,滑块-润滑油/磁盘接触状态(或深度)的精确表征变得越来越重要。目前使用的热飞行高度控制(TFC)滑块需要轻微的触地(或接触)来确定间隙的参考位置,并且对磁盘润滑剂的渗透深度的精确测量和控制对于实现用于未来润滑剂接触记录的稳定HDI是必不可少的。在本文中,多种技术(例如,声发射技术、润滑剂分布绘图、滑块磨损检测和滑块动力学测量)来表征不同TFC致动水平下的接触状态/深度和HDI稳定性。实验结果表明,这些方法的有效性,并通过声发射技术确定的间隙参考位置是在润滑油-空气界面。此外,两个动态稳定的接触状态-轻滑块润滑油接触和深滑块磁盘接触,但后者会导致滑块磨损,从而是不实际的实现一个可靠的润滑油接触HDI。
As head-disk clearance has been reduced to nearly 1 nm, and a partial lube-contact head-disk interface (HDI) may even be necessary to meet future magnetic spacing needs, precise characterization of the slider-lube/disk contact state (or depth) becomes increasingly important. The currently used thermal fly-height control (TFC) sliders require a slight touchdown (or contact) to determine the reference position of the clearance, and accurate measurement and control of the penetration depth into the disk lubricant are essential to achieve a stable HDI for future lube-contact recording. In this paper, multiple techniques (e.g., acoustic emission technology, lubricant distribution mapping, slider wear detection, and slider dynamics measurement) are implemented to characterize the contact state/depth and HDI stability at different TFC actuation levels. Experimental results demonstrate the effectiveness of these methods and suggest that the clearance reference position determined through the acoustic emission technology is at the lubricant-air interface. Moreover, two dynamically stable contact states-light slider-lube contact and deep slider-disk contact-are found, but the latter causes slider wear and thereby is not practical for realizing a reliable lube-contact HDI.
DOI: 10.1109/tmag.2009.2039636
发表时间: 2010-05
影响因子: 2.1
作者:
L. Gonzaga;Bo Liu;Shengkai Yu;W. Hua;Weidong Zhou
通讯作者: L. Gonzaga;Bo Liu;Shengkai Yu;W. Hua;Weidong Zhou
DOI: 10.1109/tmag.2003.816443
发表时间: 2003-09
期刊: Digest of INTERMAG 2003. International Magnetics Conference (Cat. No.03CH37401)
影响因子: --
作者:
T. Watanabe;D. Bogy
通讯作者: T. Watanabe;D. Bogy
DOI: 10.1109/tmag.2008.2010671
发表时间: 2009-02
影响因子: 2.1
作者:
B. Liu;M. Zhang;S.K. Yu;W. Hua;Y.S. Ma;W.D. Zhou;L. Gonzaga;Y. Man
通讯作者: B. Liu;M. Zhang;S.K. Yu;W. Hua;Y.S. Ma;W.D. Zhou;L. Gonzaga;Y. Man
DOI: 10.1080/10402000903125360
发表时间: 2010-01-01
影响因子: 2.1
作者:
Li, Ning;Zheng, Lanshi;Meng, Yonggang
通讯作者: Meng, Yonggang
DOI: 10.1007/s00542-006-0322-9
发表时间: 2007-04
期刊: Microsystem Technologies
影响因子: --
作者:
A. Daugela;Subrahmanyan Nagarajan;Z. Boutaghou
通讯作者: A. Daugela;Subrahmanyan Nagarajan;Z. Boutaghou