Slider Dynamics and Wear Behaviors at Subnano-Clearance Head-Disk Interface

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

5 Scopus Citations
View graph of relations

Author(s)

  • Yu Wang
  • Xiongfei Wei
  • Xianghua Liang
  • Yanyang Zi
  • Kwok-Leung Tsui

Detail(s)

Original languageEnglish
Article number7225168
Journal / PublicationIEEE Transactions on Magnetics
Volume52
Issue number1
Publication statusPublished - 1 Jan 2016

Abstract

Recently, to achieve a stable slider dynamics and a high recording density, a contact (lubricant surfing) recording scheme has been proposed in the literature. However, under contact/surfing condition, the interaction between the head and the disk may bring new tribological issues, which has not been fully understood so far. To amend that, this paper experimentally investigates the relation between the interfacial dynamics and the wear behaviors of head/disk at different contact conditions. To investigate the interfacial dynamics, slider was then flown at different contact stages, and slider vibrations in both the vertical and the downtrack directions were monitored using two laser Doppler vibrometers. The wear depth of slider was inspected after the experiment to correlate interfacial dynamics at different contact stages. According to our results, a severe contact is not necessary to generate serious wear, which has strong correlation with the interfacial dynamics. Compared with the structure modes, the air-bearing modes were found to have a dominant impact on slider wear. Moreover, nonlinear vibration has a much more detrimental effect on the slider wear, although this type of vibration accompanies small amplitude at high-frequency band. This paper helps understand the wear mechanisms of slider under different slider/disk contact conditions, and thus expands new designs for surfing/contact recording technologies.

Research Area(s)

  • contact, Head-disk interface, slider dynamics, wear

Citation Format(s)

Slider Dynamics and Wear Behaviors at Subnano-Clearance Head-Disk Interface. / Wang, Yu; Wei, Xiongfei; Liang, Xianghua et al.
In: IEEE Transactions on Magnetics, Vol. 52, No. 1, 7225168, 01.01.2016.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review