Abstract
Head-disk-interface of negative pressure slider is evaluated. The damage at seeking and tracking is from the dust invading the spacing between the slider and the disk, wearing down the disk surface. Occurrence is suppressed by controlling of cleanliness and wear rate of disk surface. The slider does not contact the disk even at 0.1μm flying height, because damage does not occur at high cleanliness. Cleanliness and wear rate of disk surface are selected as stress for acceleration life test. The results indicate that the interface has a high life span of over 300,000 hours. In start-stop method using loading/unloading, the slider has no damage for over 30,000 cycles.
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