Abstract
The flying height of the slider in HDD decreases recently, and the chance that the slider contacts with lubricant has increased. It is very important in low flying height to analyze the contact behavior of the head and the lubricant. In this paper, we report about slider behavior in contact with various lubricants. As a result, we found that magnitude of head vibration depends on lubricant. The relationship of vibration magnitude due to lubricant difference is to be contrary by if the observed vibration direction is in vertical or in in-plane to the disk. Furthermore, we showed the correlation between viscosity of lubricant and vertical head vibration.
