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 covered by conductive diamond thin films and ultra-thin liquid lubricant films. In this study, AFM was set in the environmentally controlled chamber. We investigated the difference in a response of the force curve by varying the lubricant materials (Zdol2000, Ztetraol2000), relative humidity and lubricant film thickness. From the experimental results, it was found that meniscus bridge is easy to be extended at high relative humidity. Touch-down distance gradually increased with an increase in the relative humidity and was greater as the lubricant film thickness increased. On the other hand, adhesive force decreased with an increase in the lubricant thickness.
