Catastrophic damages on magnetic recording disks caused by slider-disk contacts during loading/unloading

摘要

Catastrophic damages on a disk caused by impacts between slider and disk during loading/unloading were observed using an optical microscope and an optical surface analyzer (OSA). Flyability of a slider during loading/unloading was studied using an acoustic emission (AE) transducer. If many film-peelings of a disk are broken out by loading/unloading, film particles peeled from the disk can adhered to the air bearing surface of a slider. Ultimately, slider-disk contacts are caused in the recording zone. In order to reduce these film-peelings, broken out by loading/unloading, it is necessary to increase the scratch resistance of thin films of a disk.