NDLI: Modeling and simulation of hard-particle interaction in head/disk interfaces

Content Provider	IEEE Xplore Digital Library
Author	Qinghua Zeng Pit, R. Payne, R. Baumgart, P. Fu-ying Huang
Copyright Year	1965
Abstract	A hard particle interacting with a slider and a disk in the head/disk interface of hard-disk drives can produce a scratch on the disk and result in data loss. Our work emphasizes modeling and simulation of slider, particle, and disk interactions, scratch generating mechanisms, and linking of scratch to interface design parameters. Two models are presented. The Monte Carlo method was used to calculate scratch probabilities and parametric studies were performed to determine the effect on scratch probability of various parameters, such as friction coefficients, particle mean size, slider wall angles, the ion-milling (IM) etch depth from the air-bearing surface (ABS) of the slider, and the efficacy of additional ABS structures acting as particle shields. Simulation results show that the friction coefficient is a dominant parameter. If the disk friction coefficient is smaller than the slider friction coefficient, scratches are not produced. Using shallow IM depths is an effective and practical way to reduce the scratch probability. Experimental results are very close to the simulation predictions.
Sponsorship	IEEE Magnetics Society
Starting Page	604
Ending Page	609
Page Count	6
File Size	879176
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
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 Magnetic heads Hard disks Joining processes Probability Predictive models Robustness Parametric study Etching Disk recording slider air bearing head/disk interface particle scratch
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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