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TECHNICAL PAPERS

Study of Generation Mechanism of Three-Body Particles in Linear Tape Recording

[+] Author and Article Information
Baogui Shi

Fax: +44 (0)121-359-0156

J. L. Sullivan, M. A. Wild, S. O. Saied

Surface Science Research Group School of Engineering and Applied Science Aston University Birmingham, B4 7ET, United Kingdom

J. Tribol 127(1), 155-163 (Feb 07, 2005) (9 pages) doi:10.1115/1.1843156 History: Received April 08, 2003; Revised June 08, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Wood,  R., 2000, “Feasibility of Magnetic Recording at a Terabit Per Square Inch,” IEEE Trans. Magn., 36(1I), pp. 36–45.
Luitjens,  S. B., Folkerts,  W., Van Kersteren,  H. W., and Ruigrok,  J. J. M., 1998, “Trends in Digital Magnetic Recording; the Application of Thin Film Heads for Tape Recording,” Philips J. Res., 51(1), pp. 5–19.
Wallace,  R. L, 1951, “The Reproduction of Magnetically Recorded Signal,” Bell Syst. Tech. J., 30, pp. 1145–1173.
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Poorman,  P., 1999, “The Effect of Tape Overwrap Angle and Head Radius on Head/Tape Spacing and Contact Pressure in Linear Tape Recording,” Tribol. Int., 31, pp. 449–455.
Lacey,  C., and Talke,  F. E., 1992, “Measurement and Simulation of Partial Contact at the Head/Tape Interface,” ASME J. Tribol., 114(4), pp. 646–652.
Sullivan,  J. L., Wild,  M. A., and Hempstock,  M. S., 2003, “The Tribology of Linear Tape/Head Interfaces and its Impact on Signal Performance,” Tribol. Int., 36, pp. 261–267.
Wild,  M. A., Shi,  B., Sullivan,  J. L., and Saied,  S. O., 2003, “A Study of Tribology of Travan Heads in Linear Tape Recording,” Tribol. Int., 36, pp. 335–341.
Sourty,  E., Wild,  M., and Sullivan,  J. L., 2002, “Pole Tip Recession and Staining at the Head to Tape Interface of Linear Tape Recording Systems,” Wear, 252, pp. 276–299.
Sourty,  E., Sullivan,  J. L., and Bijker,  M. D., 2000, “The Tribology of Advanced Digital Recording (ADR) System,” Tribol. Int., 33, pp. 629–637.
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Hempstock,  M. S., Wild,  M., and Sullivan,  J. L., 2000, “Interactions at the Head-Tape Interface of a Linear Tape System,” Tribol. Int., 33, pp. 391–399.
Nastasa,  C., and Sullivan,  J. L., 2002, “Analysis of the Stains Produced by Metal Particle Tape on Helical Scan Heads in Data Recording Applications,” Tribol. Int., 35, pp. 211–217.
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Patton,  S., and Bhushan,  B., 1996, “Micromechanical and Tribological Characterization of Alternate Pole Tip Materials for Magnetic Recording Heads,” Wear, 202, pp. 99–109.
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Figures

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Schematic diagram of two rails and slots in the perpendicular direction to the tape moving direction
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Schematic diagram of two rails and enlarged, one channel of a LTO head
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The image shows PTR measurement method for unused head
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AFM images of head pole area at condition of 10°C 10% RH (30 μm×30 μm). Other conditions images are 15 μm×15 μm scale.
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AFM images of head ceramic wear after different passes in different conditions (15 μm×15 μm)
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PTR of LTO heads cycling with tape (a) 40°C, RH 80% (NWC 35.5) (b) 22°C, RH40% (NWC 7.5) (c) 40°C, RH15% (NWC 6.7) (d) 10°C, RH10% (NWC 1.0)
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AFM three-dimensional images of LTO heads unused, 100 passes, 1000 passes, 5000 passes (from top to bottom) at 40 deg, 80% condition (NWC 35.5)
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The typical Ti 2p core-level XPS peaks of TiO2 and TiC existing in the same AlTiC sample
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Ti 2p photoelectorn peaks (a) Boiled AlTiC sample for 30 h in de-ionized water (2 mm×3 mm); (b) Virgin AlTiC (2 mm×3 mm); (c) Pure AlTiC without TiO2(2 mm×3 mm); (d) Unused LTO head ceramic (600 μm diameter); (e) Head after RH10%, 10°C, 1000 km cycling (600 μm); (f ) Head after RH15%, 40°C, 1000 km cycling (600 μm); (g) Head after RH40%, 22°C, 1000 km cycling (600 μm); (h) Head after RH80%, 40°C, 1000 km cycling (600 μm); (i) Boiled real LTO head for 30 h (600 μm).
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The atomic ratio of TiO2 to TiC on the surface of heads with water content increases corresponding to four 1000 km tape cycling conditions in Table 3
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AFM image of unused AlTiC sample
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AFM image of AlTiC sample boiled in de-ionized water for 30 h
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Three-body particles present on the thin-film region after cycling with tape at 40°C, 15%RH (10 μm×10 μm) (a) 100 passes pole area (b) 5000 passes pole area.

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