Abstract
Recently, it is important to clarify the interactive forces between slider and disk surfaces in nanometer head-disk interface region in HDD, in order to achieve ultra-high magnetic recording density. This paper describes the interactions between atomic force microscope (AFM) probes and ultra-thin liquid lubricant films. We investigated the difference in a response of the force curve and lateral force by varying the lubricant materials (Z-tetraol, TA-30, D-4OH) and lubricant film thickness. From the experimental results, it was found that meniscus bridge is easy to be extended at high lubricant film thickness. On the other hand, adhesive force and lateral force gradually decreased with an increase in the lubricant thickness. The interactive forces around monomolecular film thickness are affected the adsorption form the lubricant molecules.
