Capacitance between a slider and disk was measured to relate slider/disk interplanar separation to static friction. The parallel plate capacitance formula was used to convert the capacitance into separation with a resolution of less than 1 nm. Separation and coefficient of static friction (stiction) were measured using assorted lubricant thicknesses with and without bonding on polished and textured disks. Separation was measured during contact start/stop (CSS) and long term slider dwell times, after which static friction was measured. Polished disks had high stiction events with smaller separations during and after the stiction event, unlike textured disks. Long-term dwell studies showed the coefficient of static friction and slider micro descent (decrease in interplanar separation) to be greatest with greater lubricant thickness and polished disks. Static friction and separation with bonded and unlubricated disks were time independent.

1.
Bhushan, B., 1990, Tribology and Mechanics of Magnetic Storage Devices, Springer-Verlag, New York.
2.
Bhushan
B.
, and
Dugger
M. T.
,
1990
, “
Liquid-Mediated Adhesion at the Thin-Film Magnetic Disk/Slider Interface
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
112
, pp.
217
223
.
3.
Lide, D. R. (ed.), 1992, Handbook of Chemistry and Physics, 72 ed., Chapter 12, CRC Press, Boca Raton, FL, p. 38.
4.
Liu
C. L.
, and
Mee
P. B.
,
1983
, “
Stiction at the Winchester Head-Disk Interface
,”
IEEE Trans. Magn.
, Vol.
Mag-19
, No.
5
, pp.
1659
1661
.
5.
Gitis, N. V., Volpe, L., and Sonnenfeld, R., 1991, “Long-Term Stiction at the Magnetic Thin-Film Disk-Slider Interface,” Adv. Info. Storage Syst., Vol. 3, pp. 91–105.
6.
Gitis
N. V.
, and
Sonnenfeld
R.
,
1993
, “
Experimental Study of Stationary Head-Disk Contact in Magnetic Disk Drives
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
115
, pp.
214
218
.
7.
Streator
J. L.
,
Bhushan
B.
, and
Bogy
D. B.
,
1990
, “
Lubricant Performance in Magnetic Thin Film Disks With Carbon Overcoat-Part 1: Dynamic and Static Friction
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
113
, pp.
22
31
.
8.
Tian
H.
, and
Matsudaira
T.
,
1993
, “
The Role of Relative Humidity, Surface Roughness, and Liquid Build-up on Static Friction Behavior of the Head/Disk Interface
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
115
, pp.
28
35
.
This content is only available via PDF.
You do not currently have access to this content.