MAGNETIC DISK AND PROCESS FOR PRODUCING THE MAGNETIC DISK

摘要

This invention provides a magnetic disk which can satisfactorily suppress the elution of internal components from an end face of a magnetic disk, and corrosion damage. The magnetic disk comprises a disk substrate, and a thin film including a magnetic layer, a carbonaceous protective layer, and a lubricating layer provided in that order on the disk substrate. The main surface and the end face of the magnetic disk are covered with the carbonaceous protective layer. The carbonaceous protective layer on its lubricating layer side contains nitrogen. The proportion of the content of nitrogen atoms to the content of carbon atoms in the protective layer provided on the end face is equal to or greater than the proportion of the content of nitrogen atoms to the content of carbon atoms in the protective layer provided on the main surface.