Photo process to improve tribological performance of thin lubricant film
AssigneeSeagate Technology LLC
InventorsJianwei Liu, Michael Joseph Stirniman
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Abstract
A system and method for improving the durability and reliability of recording media used in hard drives is disclosed. A protective overcoat made of diamond like carbon (DLC) is first deposited over a magnetic layer. A lubricant layer, typically containing Moresco lubricant or a perfluoropolyether (PFPE), is then deposited over the protective overcoat. Finally, the lubricant layer is exposed to ultraviolet (UV) light for a period of time.
Claims20
A method of lubricating a magnetic disk comprising, the steps of:
- applying a lubricant layer to a magnetic media wherein said magnetic media further includes an overcoat comprising carbon;
- and
- exposing said lubricant layer to UV light.
A method of manufacturing a magnetic disk, comprising the steps of:
- depositing a seed layer onto a substrate;
- depositing a magnetic stack over said seed layer;
- depositing a protective overcoat over said magnetic stack;
- depositing a lubricant over said protective overcoat;
- and
- exposing said lubricant layer to UV light.
A magnetic media, comprising:
- a substrate including at least one surface;
- a layer stack formed on said at least one surface, including a protective overcoat;
- and
- a lubricant layer formed on said protective overcoat, said lubricant layer having been exposed to UV light.
A magnetic media, comprising:
- a substrate including at least one surface;
- a seed layer deposited over said substrate for assisting the growth of subsequent films;
- a magnetic layer deposited over said seed layer;
- and
- a protective overcoat layer containing carbon deposited over said magnetic layer;
- and
- a lubrication layer deposited over said protective layer wherein said lubrication layer is exposed UV light.
A disc drive, comprising:
- a magnetic media including a protective overcoat layer;
- a motor for spinning said magnetic media about its center
- a transducer for reading and writing on said magnetic media while said magnetic media is rotated about by said motor;
- and
- a lubricating layer deposited over said protective layer, wherein said lubricating layer is exposed to UV light improving the interaction between said transducer and said magnetic media.
A magnetic media comprising;
- means for magnetically storing and retrieving information on a rotating surface;
- and
- means for lubricating said rotating surface.
Dependencies are inferred from the claim text.