Title :
Effect of Molecular Structure of PFPE Lubricant on Interaction at HDI in Near-Contact Operation
Author :
Sakane, Y. ; Wakabayashi, A. ; Li, L. ; Kasai, P.H.
Author_Institution :
MORESCO, Hyogo
Abstract :
Reduction of interactive force between magnetic head and hard disk is an important issue for maintaining the ultra-low spacing required for ultra-high recording density. The spacing would be below 5 nm for 1 Tb/in2 density. In this study, the head-disk interactive force was examined when monofunctional lubricant (that with a functional group only at one end) and difunctional lubricant (that with functional groups at both ends) were used, respectively. The study has revealed that usage of monofunctional lubricants effectively reduces the head-disk adhesive interaction at near-contact operation
Keywords :
adhesion; hard discs; lubricants; magnetic heads; PFPE lubricant; difunctional lubricant; hard disk; head-disk adhesive interaction; head-disk interactive force; magnetic head; molecular structure; monofunctional lubricant; near-contact operation; ultra-high recording density; Atomic force microscopy; Disk recording; Force measurement; Hard disks; Lubricants; Magnetic heads; Magnetic recording; Petroleum; Rotation measurement; Testing; Hard disk; head-disk interface (HDI); interaction force; lubricant; take-off; touch-down;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878627
