NDLI: Study of a Spherical-Pad Head Slider for Stable Low-Clearance Recording in Near-Contact Regime

Content Provider	Springer Nature Link
Author	Shimizu, Yuki Xu, Junguo Tsuchiyama, Ryuji Anan, Hidetoshi
Copyright Year	2008
Abstract	A slider with an air-bearing surface that has a small spherical pad around the read/write elements on the trailing center pad was developed to reduce the meniscus and friction forces and slider clearance loss. While the slider which has a spherical pad of a radius less than 10 mm, the meniscus force is reduced to less than 10% of the air-bearing lift force, thus, flying height modulation is decreased and instability are suppressed. Evaluation using an air-bearing surface model with a spherical pad showed that slider clearance was increased by 1 nm at a 5-nm nominal flying height. Evaluation using touchdown-takeoff testing of a spherical pad slider fabricated by depositing carbon on the center pad air-bearing surface by means of the lift-off resist technique showed that the spherical pad slider had a very small friction force and acoustic emission output up to a 5-nm interference height. It thus provides instability-free sliding in the near-contact regime.
Starting Page	161
Ending Page	167
Page Count	7
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	30
Issue Number	3
e-ISSN	15732711
Language	English
Publisher	Springer US
Publisher Date	2008-03-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Head slider Head/disk interface Spherical pad slider Meniscus force Friction force Nanotechnology Physical Chemistry Theoretical and Applied Mechanics Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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