The bearing area of conventional texture on magnetic recording disk surfaces shows a tendency of increase with a decrease in surface height. This is believed to be a major reason for the increase of head/disk friction with the accumulation of CSS cycles. In view of this, a novel type of texture is developed in this study. This type of texture consists of discrete pillar-shaped asperities, whose height and shape can be optimized to reduce friction build-up and wear depth during CSS operation. It also allows lower asperity height to reduce take-off velocity and glide height. In addition, it is suitable for landing zone texturing. The discrete texture remarkably outperforms mechanical texture during CSS tests.

Issue Section:
Research Papers
Topics:
Texture (Materials), Tribology, Disks, Friction, Bearings, Columns (Structural), Cycles, Magnetic recording, Shapes, Wear
1.
Berg, L., 1993, “A Statistical Model of Surface Evolution,” Advances in Information Storage Systems, Vol. 5, ASME Press, New York, p. 283.
2.
Bhushan, B., 1993, “Magnetic Slider/Rigid Disk Substrate Materials and Disk Texturing Techniques-Status and Future Outlook,” Advances in Information Storage Systems, Vol. 5, ASME Press, New York, p. 175.
3.
Ganapathi
S. K.
, and
Talke
F. E.
,
1993
, “
Correlation Between Contact Start/Stop and Constant Speed Drag Testing in Magnetic Head-Disk Tribology
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
115
, p.
387
387
.
4.
Koka
R.
,
Pitchford
T.
,
Jesh
M.
, and
Egbert
D.
,
1990
, “
Studies on Head/Disc Contact Area Increase During Contact Start/Stop and Continuous Drag Testing of Thin Film Discs
,”
Tribology and Mechanics of Magnetic Storage Systems
, Vol.
VII
, p.
55
55
.
5.
Koka, R., Viswanathan, K. V., and Rothschild, W., 1991, “Influence of Roughness on Head/Disk Stiction Induced by A Mobile Lubrication Film,” Advances in Information Storage System, Vol. 3, ASME Press, New York, p. 117.
6.
Li
Y.
,
Trauner
D.
, and
Talke
F. E.
,
1990
, “
Effect of Humidity on Stiction and Friction of the Head/Disk Interface
,”
IEEE Transactions on Magnetics
, Vol.
26
, No.
5
, p.
2487
2487
.
7.
Li
Y.
, and
Talke
F. E.
,
1992
, “
A Model for the Effect of Humidity on Stiction of the Head/Disk Interface
,”
Tribology Transactions
, Vol.
35
, p.
429
429
.
8.
Ranjan
R.
,
Lambeth
D. N.
,
Tromel
M.
,
Goglia
P.
, and
Li
Y.
,
1992
, “
Laser Texturing for Low-Flying-Height Media
,”
J. Appl. Phys.
, Vol.
69
(
8
), p.
5745
5745
.
9.
Tanaka, H., Sugimoto, H., Gomi, K., and Mikaye, Y., 1991, “Friction of Magnetic Rigid Disks with Well-Defined Surface Texture,” Advances in Information Storage System, Vol. 3, ASME Press, New York, p. 107.
10.
Tian
H.
, and
Matsudaira
T.
,
1992
, “
Effect of Relative Humidity on Friction Behavior of the Head/Disk Interface
,”
IEEE Transactions on Magnetics
, Vol.
28
, No.
5
, p.
2530
2530
.
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