Patterned magnetic recording disk with substrate patterned by ion implantation

摘要: A method for making a patterned magnetic recording disk uses ion implantation of the substrate. Energetic ions, such as He, N or Ar are directed to substrate through mask, preferably non-contact mask. They implanted into substrate, and process causes localized topographic distortions in surface. layer is then deposited over conventional manner, by sputtering. The result with regions that raised above Because these elevated, they closer head drive can thus be individually recorded form discrete bits. Depending on type used, cause either swelling pillars compaction pits. patches material tops pillars, surface between pits,