Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855243
