Abstract
In order to make clear the dynamic contact and adhesion forces of a magnetic head slider in near contact regime, we experimentally investigated the dynamic collision motion of hemispherical sliders on stationary magnetic disks. We used the hemispherical glass sliders of 1 and 2 mm in radius and the magnetic disks with different lubricant thickness of 0, 1, 2 and 3 nm with and without UV irradiation. As a result, we found that the dynamic adhesion forces of 1 and 2 mm radius sliders are almost equal to their static meniscus forces. In the case of 1 mm radius slider and 3 nm thick lubricant without UV, the dynamic adhesion force increases significantly because of a squeeze film effect. The 2 mm radius slider does not show a clear dynamic adhesion force at an impact velocity larger than 1.5 mm/s. We also found that contact force can be estimated by Hertz contact theory.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call