Magnetic recording medium lubricant mixture and systems thereof
AssigneeHGST Netherlands B.V.
InventorsYoko Saito, Hiroyuki Matsumoto, Sukefumi Ito, Yoshihiko Ooeda
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Abstract
In one embodiment, a magnetic recording medium includes a magnetic recording layer adapted to store magnetic information, a protective film positioned above the recording layer, the protective film being adapted to reduce wear to the magnetic recording layer, and a lubricant positioned above the protective film, the lubricant being adapted to provide a stable head-to-disk interface, wherein the lubricant includes a first lubricant, the first lubricant including a material having the following chemical formula: wherein Rf represents: and wherein Y is a repeating chain including carbon and fluorine.
Claims19
A magnetic recording medium, comprising:
- a magnetic recording layer adapted to store magnetic information;
- a protective film positioned above the recording layer, the protective film being adapted to reduce wear to the magnetic recording layer;
- and
- a lubricant positioned above the protective film, the lubricant being adapted to provide a stable head-to-disk interface,
- wherein the lubricant comprises a first lubricant, the first lubricant comprising a material having the following chemical formula:
- wherein Rf represents:
- and wherein Y is a repeating chain comprising carbon and fluorine.
A lubricant for providing a stable head-to-disk interface, the lubricant comprising:
- a mixture of a first lubricant and a second lubricant,
- wherein the first lubricant comprises a material having the following chemical formula:
- wherein two or more hydrogen atoms of an aromatic ring are substituted with a perfluoropolyether chain (Rf) which does not have a polar group at a terminal thereof, and
- wherein the second lubricant comprises a material having the chemical formula X—CH2CF2CF2O—Z—CF2CF2CH2—X, wherein X is a polar terminal group, and wherein Z is a repeating chain comprising carbon and fluorine.
A method for forming a magnetic head, the method comprising:
- forming a protective film above a magnetic recording layer that is adapted to store magnetic information, the protective film being adapted to reduce wear to the magnetic recording layer;
- forming a lubricant above the protective film, the lubricant being adapted to provide a stable head-to-disk interface,
- wherein the lubricant comprises a first lubricant, the first lubricant comprising a material having the following chemical formula:
- wherein Rf represents:
- and wherein Y is a repeating chain comprising carbon and fluorine.
Dependencies are inferred from the claim text.