Title :
Molecular Adhesion Model for the Bridged State of a Magnetic Recording Slider
Author :
Karis, T.E. ; Guo, X.C.
Author_Institution :
San Jose Res. Center, Hitachi Global Storage Technol., San Jose, CA
fDate :
6/1/2007 12:00:00 AM
Abstract :
Frictional hysteresis loops are measured with a pico-slider on typical desktop media to illustrate the bridged state with a chemisorbed perfluoropolyether lubricant. Our new molecular adhesion model calculates the mean spacing and bridge stiffness from the experimental friction force, surface topography, and dispersive surface energy. An increase in friction force with increasing pressure is consistent with molecular bond orientation by the adhesion stress
Keywords :
adhesion; friction; hysteresis; lubricants; magnetic heads; magnetic recording; surface energy; surface topography; adhesion stress; bridge stiffness; bridged state; chemisorption; dispersive surface energy; friction force; frictional hysteresis loops; magnetic recording slider; mean spacing; molecular adhesion model; molecular bond orientation; perfluoropolyether lubricant; surface topography; Adhesives; Bonding forces; Bridges; Dispersion; Friction; Lubricants; Magnetic hysteresis; Magnetic recording; Stress; Surface topography; Disk drives; disks; friction; head-disk interface; lubricant; magnetic disk; slider;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893839
