Thickness and adhesion force distributions in the spreading region of molecularly thin lubricant films on magnetic disks

Author

Zhang, Hedong ; Mitsuya, Yasunaga ; Nakai, Eiji ; Goto, Keiko ; Fukuzawa, Kenji

Author_Institution

Dept. of Complex Syst. Sci., Nagoya Univ., Japan

Volume

41

Issue

10

fYear

2005

Firstpage

3001

Lastpage

3003

Abstract

Nanoscale adhesion on magnetic disks lubricated with molecularly thin perfluoropolyether (PFPE) Zdol films was investigated using atomic force microscopy (AFM) tips 20-40 nm in radius. An effective method in which the adhesion force distribution in the spreading region of step-shaped lubricant films is measured to elucidate the effect of lubricant thickness is presented. From the correlation between the thickness and adhesion force distributions in the spreading region, it was found that minimum adhesion could be obtained with the application of a one-monolayer lubricant film.

Keywords

adhesion; atomic force microscopy; disc drives; hard discs; magnetic heads; magnetic thin films; AFM; adhesion force distribution; atomic force microscopy; hard disk drive; head-disk interface; lubricant film; lubricant spreading; magnetic disks; molecularly thin perfluoropolyether Zdol film; nanoscale adhesion; thickness effect; Adhesives; Amorphous magnetic materials; Atomic force microscopy; Atomic measurements; Force measurement; Hard disks; Lubricants; Magnetic films; Magnetic heads; Thickness measurement; Adhesion force; hard disk drive; head–disk interface; lubricant spreading; thickness effect;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855243

Filename

1519187