Magnetic recording medium with magnetic capping layer containing carbon and a magnetic recording apparatus for use therewith

Abstract

Various apparatuses, devices, methods, and media are disclosed for perpendicular magnetic recording (PMR) or enhanced PMR (ePMR) where a magnetic recording medium includes a magnetic capping layer with carbon. The capping layer may include, e.g., an amount of carbon providing an atomic percentage (at. %) in the media in the range of 10-30 at. %. In one particular example, the capping layer is 54Co-21.5Pt-24.5C. In some examples, the capping layer is CoPtC—X, where X is one or more of B, Cr, Ru, O, and Ta. For instance, the capping layer may be 60.5Co-2.5Cr-24Pt-3Ru-10C. The magnetic recording medium may include additional layers such as a soft underlayer (SUL) on the substrate, a seed layer on the SUL, an interlayer on the seed layer, and an underlayer on the interlayer, with the magnetic recording layer on the interlayer. A magnetic capping layer with carbon may also be configured for heat-assisted magnetic recording (HAMR) media.

Dependencies are inferred from the claim text.