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US 10,984,830 B2Granted
Two dimensional amorphous carbon as overcoat for heat assisted magnetic recording media
AssigneeNational University of Singapore
InventorsBarbaros Ozyilmaz, Chee-Tat Toh, Hongji Zhang, Alexander Mayorov, Darim Badur Ferry, Henrik Andersen, Cagdas Cetin, Irfan Haider Abidi
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Abstract
A recording device comprising an overcoat layer, wherein the overcoat layer comprises an amorphous carbon overcoat layer having a crystallinity (C)≤0.8.
Claims22
A recording device comprising:
- an overcoat layer on a substrate,
- wherein the overcoat layer comprises an amorphous carbon layer having a crystallinity (C) ≤0.8,
- wherein the crystallinity (C)=number of hexagons:(number of hexagons+number of non-hexagons).
A magnetic recording media device comprising:
- a substrate layer;
- an adhesion layer;
- a heat sink layer;
- a soft under layer;
- another under layer;
- a recording layer;
- a capping layer;
- an overcoat layer;
- and
- a lubricant layer,
- wherein the overcoat layer comprises an amorphous carbon overcoat layer having a crystallinity (C)≤0.8, and
- wherein the crystallinity (C)=number of hexagons:(number of hexagons+number of non-hexagons).
9 more elements
Dependencies are inferred from the claim text.