NDLI: Slider dynamics during continuous contact with textured and smooth disks in ultra low flying height

Content Provider	IEEE Xplore Digital Library
Author	Tanaka, H. Yonemura, S. Tokisue, H.
Copyright Year	1965
Abstract	Dynamics of a nano-slider during continuous contact with textured and smooth disks are studied using laser Doppler vibrometer, friction sensor, acoustic emission (AE) transducer and read back signal from a magneto-resistive head on the slider. The flying height of the slider is controlled from flying to contact at the same velocity by changing the environmental pressure. When the slider flies over the textured disk, contact occurs at flying height of 14 nm, and friction and AE signal increase gradually with decreasing flying height. The increase in the amplitude of the slider vibration is within a few nanometers from flying to contact. When the slider flies over the smooth disk, contact occurs at much lower flying height of 6 nm. However, friction, AE signal and the amplitude of the vibration show a steep increase upon contact. Both pitch and roll vibration modes of the slider air bearing are strongly excited with amplitude of about 10 nm. The pitch vibration results in the slider impacting the disk surface severely. As a result, the disk vibrates at the same frequency. In addition, thermal asperities with extraordinarily high amplitude are observed associated with the impacts induced by the pitch vibration.
Sponsorship	IEEE Magnetics Society
Starting Page	906
Ending Page	911
Page Count	6
File Size	153852
File Format	PDF
ISSN	00189464
Volume Number	37
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Friction Vibrometers Magnetic sensors Acoustic sensors Acoustic emission Acoustic transducers Magnetic heads Velocity control Pressure control Frequency
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Role of disk surface roughness on slider flying height and air-bearing frequency

Slider-lubricant interactions for low flying sliders

Slider-Disk Contact Characterization Using a Thermal Fly-Height Control Slider

Friction, Heat, and Slider Dynamics During Thermal Protrusion Touchdown

Numerical Simulation of Thermal Flying-Height Control Sliders to Dynamically Minimize Flying Height Variations

Alternate air bearing slider designs for areal density of 1 Tb/in/sup 2/

Dynamics of Partial Contact Head Disk Interface

Natural frequencies of sliders and transducers used to detect slider-disk contacts

Optimized Design of Heaters for Flying Height Adjustment to Preserve Performance and Reliability

Slider dynamics during continuous contact with textured and smooth disks in ultra low flying height

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