Lubricants comprising fluorinated graphene nanoribbons for magnetic recording media structure
View Patent ↗A novel lubricant comprising a fluorinated graphene nanoribbon for a magnetic recording media structure is disclosed. The magnetic recording media structure includes a substrate, a magnetic recording layer for recording information disposed over the substrate, a protective overcoat layer for protecting the magnetic recording layer disposed over the magnetic recording layer, and a lubricant layer disposed over the protective overcoat layer and comprising a fluorinated graphene nanoribbon.
1. A magnetic recording media structure comprising:
a substrate;
a magnetic recording layer for recording information disposed over the substrate;
a protective overcoat layer for protecting the magnetic recording layer disposed over the magnetic recording layer; and
a lubricant layer disposed over the protective overcoat layer and comprising a fluorinated graphene nanoribbon, wherein the protective overcoat layer comprises a carbon overcoat (COC).
2. The magnetic recording media structure of claim 1 , wherein the magnetic recording media structure is a heat assisted magnetic recording (HAMR) media structure.
3. The magnetic recording media structure of claim 1 , wherein the protective overcoat layer has a thickness between about 0.5 and 4 nm.
4. The magnetic recording media structure of claim 1 , wherein the lubricant layer has a thickness between about 0.5 and 3 nm.
5. A magnetic recording media structure comprising:
a substrate;
a magnetic recording layer for recording information disposed over the substrate;
a protective overcoat layer for protecting the magnetic recording layer disposed over the magnetic recording layer; and
a lubricant layer disposed over the protective overcoat layer and comprising a fluorinated graphene nanoribbon, wherein the fluorinated graphene nanoribbon has a length between about 1 and 30 nm.
6. A magnetic recording media structure comprising:
a substrate;
a magnetic recording layer for recording information disposed over the substrate;
a protective overcoat layer for protecting the magnetic recording layer disposed over the magnetic recording layer; and
a lubricant layer disposed over the protective overcoat layer and comprising a fluorinated graphene nanoribbon, wherein the fluorinated graphene nanoribbon has a width between about 2 and 20 angstroms.
7. A method of lubricating a hard disk drive, the method comprising:
providing a magnetic recording media stack comprising a magnetic recording layer for recording information and a protective overcoat layer disposed over the magnetic recording layer; and
providing a lubricant layer comprising a fluorinated graphene nanoribbon on the protective overcoat layer, wherein the protective overcoat layer comprises a carbon overcoat (COC).
8. The method of claim 7 , where in the fluorinated graphene nanoribbon is grown in situ on the COC during fabrication of the magnetic recording media stack.
9. The method of claim 7 , wherein the fluorinated graphene nanoribbon is applied to the COC after the magnetic recording media stack has been fabricated.
10. The method of claim 9 , wherein the magnetic recording media stack is dip-coated with the fluorinated graphene nanoribbon.