Magnetic devices and magnetic media with graphene overcoat

摘要

A magnetic disk according to one embodiment includes a recording layer; and a layer of graphene formed above the recording layer. A nucleation layer may be formed between the recording layer and the graphene layer in some approaches. A magnetic device according to another embodiment includes a transducer; a nucleation layer formed above the transducer; and a layer of graphene formed on the nucleation layer. A method according to one embodiment includes forming a nucleation layer above a magnetic layer of a magnetic disk or magnetic device; and forming a layer of graphene on the nucleation layer. A method according to another embodiment includes depositing SiC above a magnetic layer of a magnetic disk or magnetic device, the SiC being equivalent to several monolayers thick; and surface heating the SiC to selectively evaporate some of the Si from the SiC for forming a layer of graphene on a SiC layer. Additional products and methods are also presented.

主权项

1. A magnetic disk, comprising:
a perpendicular magnetic recording layer; and a single graphene monoatomic layer formed above the perpendicular magnetic recording layer as a continuous film extending across the perpendicular magnetic recording layer, wherein the graphene monoatomic layer is a single atomic sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice, wherein the graphene monoatomic layer is one carbon atom in thickness, and wherein only one graphene monoatomic layer is present above the perpendicular magnetic recording layer; and a lubricant layer directly on the single monoatomic layer of graphene.