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TECHNICAL PAPERS

Wear Measurements of Diamond-Like Carbon Coated Proximity Recording Sliders Using Raman Spectroscopy

[+] Author and Article Information
Hidekazu Kohira

Data Storage & Retrieval Systems Division, Hitachi, Ltd., 2880 Kozu, Odawara-shi, Kanagawa, 256-8510, Japan

F. E. Talke

Center for Magnetic Recording Research, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0401

J. Tribol 122(1), 288-292 (Jun 30, 1999) (5 pages) doi:10.1115/1.555355 History: Received March 04, 1999; Revised June 30, 1999
Copyright © 2000 by ASME
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References

Machcha,  A., McMillan,  T., and Talke,  F. E., 1996, “The Tribology of Tri-pad Sliders with Hydrogenated and Nitrogenated Disks,” IEEE Trans. Magn., 32, No. 5, pp. 3654–3655.
Hsia,  Y. T., Rottmayer,  B., and Donovan,  M. J., 1996, “A New Wear Measurement Technique for Pseudo-Contact Magnetic Recording Heads,” IEEE Trans. Magn., 32, No. 5, pp. 3750–3752.
Varansasi,  S. S., Lauer,  J. L., Talke,  F. E., Wang,  Geng, and Judy,  J. H., 1997, “Friction and Wear Studies of Carbon Overcoated Thin Films Magnetic Sliders: Application of Raman Microspectroscopy,” ASME J. Tribol., 119, pp. 471–475.

Figures

Grahic Jump Location
Schematic of subambient pressure slider
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Flying height versus velocity and skew angle for a number of sliders
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Pitch angle versus velocity and skew angle for a number of sliders
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Slider coordinate system and Raman measurement points
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AE output versus time for typical start/stop cycle
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Typical raw Raman spectrum: intensity as a function of wave number and duration of seek test
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Typical deconvoluted Raman spectrum (Gaussian fit): ID is peak intensity of D-band and IG is peak intensity of G-band
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Raman intensity of G-band versus carbon thickness
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Raman intensity of G-band for point A and point E versus seek time
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Raman intensity of G-band near trailing edge after 500 second seek test
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Raman intensity of G-band versus time during “track following”
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Raman intensity of G-band versus seek time and spindle speed for point A near trailing edge
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Raman intensity of G-band versus sliding distance for point A near trailing edge
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Raman intensity of G-band versus seek time and interference height for point A near trailing edge
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Raman intensity of G-band versus seek time and seek frequency

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