The interaction of perfluoro-polyether lubricant with hydrogenated carbon

Author

Wang, Run-Han ; White, Richard L. ; Meeks, Steven W. ; Min, Byng G. ; Kellock, Andrew ; Homola, Andy ; Yoon, Do

Author_Institution

IBM Res. Div., Almaden Res. Center, San Jose, CA, USA

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3777

Lastpage

3779

Abstract

The incorporation of a limited amount of hydrogen in the amorphous carbon (a-C:H) overcoat improves the CSS durability of thin film media lubricated with perfluoropolyether (PFPE). A mechanism is proposed to explain this phenomenon. With increasing H content in C, the likely bonding sites for the lubricant such as the carboxyl end groups and dangling bonds decrease in the carbon films. Mobility of the lubricant measured by two different techniques was found to increase with increasing H. The improved interface durability is attributed to the enhanced lubricant mobility on hydrogenated carbon

Keywords

carbon; dangling bonds; lubrication; magnetic disc storage; magnetic recording; polymer films; CSS cycling; PFPE lubricant; amorphous hydrogenated carbon overcoat; bonding sites; carboxyl end groups; dangling bonds; interface durability; lubricant mobility; magnetic storage disk; perfluoro-polyether; thin film media; Atomic measurements; Bonding; Cascading style sheets; Hydrogen; Lubricants; Magnetic films; Optical films; Optical scattering; Spectroscopy; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.538833

Filename

538833