Abstract
It is essential to clarify the interaction between the magnetic head and the monolayer lubricant film coated on the magnetic disk in the design of next-generation hard disk drives with ultra-low flying height. However, due to the ultimately thinned thickness of the films, methods that can evaluate those mechanical properties, especially during touch-down and take-off behaviors, have not been established. In this study, by using a shear force measuring method we originally developed, we measured viscoelastic properties of molecularly thin films of polar and non-polar lubricants during touch-down and take-off behaviors.
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