To reduce the risk of head crash when a slider contacts a smooth disk during flying height adjustment, a novel tapping method for reducing the friction and lowering the risk of head crash was developed. An active-head slider was designed and fabricated to demonstrate the usefulness of the tapping approach. It is also found that micro-vibration is significantly effective in avoiding a high friction force and protecting a head from the crash due to head-disk contact during the flying height adjustment.

Issue Section:
Research Papers
Keywords:
hard discs, disc drives, friction, vibrations, electric actuators, electrical contacts
Topics:
Actuators, Disks, Friction, Vibration
1.
Menon
,
A. K.
, 2000, “
Interface Tribology for 100Gb∕in2
,”
Tribol. Int.
0301-679X,
33
, pp.
299
–
298
.
Crossref
Search ADS
 
2.
Yeack-Scranton
,
C. E.
,
Khanna
,
V. D.
,
Etzold
,
K. F.
, and
Praino
,
A. P.
, 1990, “
An Active Slider for Partial Contact Recording
,”
IEEE Trans. Magn.
0018-9464,
26
(
5
), pp.
2478
–
2483
.
Crossref
Search ADS
 
3.
Tagawa
,
N.
,
Seki
,
H.
,
Kitamura
,
K.
, and
Mori
,
A.
, 2001, “
Development of Novel PZT Thin Films for Active Sliders Based on Head Load/unload on Demand Systems
,”
Proceedings of ASME 12th Annual Symposium on Information Storage and Processing Systems
, pp.
51
–
52
.
4.
Kurita
,
M.
,
Yamazaki
,
T.
,
Kohira
,
H.
,
Matsumoto
,
M.
,
Tsuchiyama
,
R.
,
Xu
,
J.
,
Harada
,
T.
,
Inoue
,
Y.
,
Su
,
L. Z.
, and
Kato
,
K.
, 2002, “
An Active-head Slider with a Piezoelectric Actuator for Controlling Flying Height
,”
IEEE Trans. Magn.
0018-9464,
38
(
5
), pp.
2102
–
2104
.
Crossref
Search ADS
 
5.
Kurita
,
M.
,
Tsuchiyama
,
R.
,
Tokuyama
,
M.
,
Xu
,
J.
,
Yoshimura
,
Y.
,
Kohira
,
H.
,
Su
,
L. Z.
, and
Kato
,
K.
, 2003, “
Flying-height Adjustment of a Magnetic Head Slider with a Piezoelectric Micro-actuator
,”
IEEE Trans. Magn.
0018-9464,
39
(
5
), pp.
2480
–
2482
.
Crossref
Search ADS
 
6.
Kohira
,
H.
,
Tanaka
,
H.
,
Tokisue
,
H.
, and
Matsumoto
,
M.
, 1997, “
Friction Force of Negative Pressure Sliders for Proximity Recording
,”
IEEE Trans. Magn.
0018-9464,
33
(
5
), pp.
3157
–
3159
.
Crossref
Search ADS
 
7.
Tanaka
,
H.
,
Yonemura
,
S.
, and
Tokisue
,
H.
, 2001, “
Slider Dynamics during Continuous Contact with Textured and Smooth Disk in Ultra Low Flying Height
,”
IEEE Trans. Magn.
0018-9464,
37
(
2
), pp.
906
–
911
.
Crossref
Search ADS
 
8.
Tanaka
,
H.
,
Ishikawa
,
F.
,
Gomi
,
K.
,
Yamaguchi
,
N.
, and
Miyake
,
Y.
, 1994, “
Tribological Behavior of Thin Film Rigid Disks with Regular Dot Array Texture on Carbon Overcoats
,”
IEEE Trans. Magn.
0018-9464,
30
(
6
), pp.
4113
–
4115
.
Crossref
Search ADS
 
9.
Xu
,
J.
,
Tokisue
,
H.
,
Tanaka
,
H.
, and
Matsumoto
,
M.
, 2002, “
Contact Vibration of Micro-textured Sliders
,”
ASME J. Tribol.
0742-4787,
124
, pp.
281
–
287
.
Crossref
Search ADS
 
10.
Hanchi
,
J.
,
Polycapou
,
A. A.
, and
Boutaghou
,
Z.
, 1999, “
Tribology of Contacting Head Disk Interface
,”
ASME Proceeding of the Symposium on Interface Technology Towards 100Gb∕in2
, pp.
17
–
22
.
11.
Hanchi
,
J.
,
Serpe
,
C. I.
,
Qian
,
W.
, and
Boutaghou
,
Z.
, 2001, “
Self-adjustment of Flying Height Sliders for Operation in the Near-contact Recording Regime
,”
ASME Proceeding of the Symposium on Nanotribology and Nanotechnology for 1Tbit∕in2
, pp.
19
–
26
.
12.
Su
,
L. Z.
,
Xu
,
J.
,
Kurita
,
M.
,
Kato
,
K.
, and
Adachi
,
K.
, 2003, “
Tapping Effect on Friction between Slider and Disk
,”
Tribol. Lett.
1023-8883,
15
(
2
), pp.
91
–
96
.
Crossref
Search ADS
 
13.
Su
,
L. Z.
,
Xu
,
J.
,
Kurita
,
M.
,
Kato
,
K.
, and
Adachi
,
K.
, 2003, “
Friction Control by Micro-vibration under Micro-load for Magnetic Recording Storage
,”
Proceedings of the 2003 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment
, pp.
56
–
57
.
14.
Heuberger
,
M.
,
Drummond
,
C.
, and
Israelachvili
,
J.
, 1998, “
Coupling of Normal and Transverse Motions during Frictional Sliding
,”
J. Phys. Chem. B
1089-5647,
102
, pp.
5038
–
5041
.
Crossref
Search ADS
 
15.
Gao
,
J.
,
Luedtke
,
W. D.
, and
Landman
,
U.
, 1998, “
Friction Control in Thin-film Lubrication
,”
J. Phys. Chem. B
1089-5647,
102
, pp.
5033
–
5037
.
Crossref
Search ADS
 
16.
Polycarpou
,
A. A.
, and
Soom
,
A. J.
, 1995, “
Boundary and Mixed Friction in the Presence of Dynamic Normal Loads
,”
ASME J. Tribol.
0742-4787,
117
, pp.
255
–
266
.
Crossref
Search ADS
 
17.
Abo
,
M.
,
Sakamoto
,
T.
, and
Kakunai
,
S.
, 1995, “
The Variation of Friction in Plastic Contact under Vibratory Load
,”
Proceedings of the International Tribology Conference, Yokohama
, pp.
163
–
168
.
18.
Su
,
L. Z.
, 2003, “
Active Control of Friction between Head-slider and Disk for Magnetic Memory Devices
,” Ph.D. thesis, Tohoku University, Sendai, Japan.
19.
Su
,
L. Z.
,
Kurita
,
M.
,
Xu
,
J.
,
Kato
,
K.
, and
Adachi
,
K.
, 2002, “
Dynamic and Static Characteristics of Active-head Sliders
,”
The 2nd AISATRIB International Conference
.
20.
Yeack-Scranton
,
C. E.
,
Khanna
,
V. D.
, and
Praino
,
A. P.
, 1990, “
Mechanical Aspects of Active Sliders for Contact Recording in Rigid Disk Files
,”
Tribol. and Mech. Magn. Storage Syst.
,
STLE SP-29
, pp.
158
–
164
.
Copyright © 2005
 by American Society of Mechanical Engineers
You do not currently have access to this content.