Methods of production for corrosion-resistant bit patterned media (BPM) and discrete track media (DTM)
AssigneeHGST Netherlands B.V.
InventorsQing Dai, Bruno Marchon, Katsumi Mabuchi, Mina Amo
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Abstract
A method for producing a magnetic recording medium in one embodiment includes forming a magnetic material layer above a substrate, transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions, depositing a nonmagnetic material above the concave portions to form nonmagnetic regions, forming an oxide layer and/or hydroxide layer above the magnetic regions of the recording layer, and forming an organic material layer which exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy above the oxide layer and/or hydroxide layer.
Claims17
A method for producing a magnetic recording medium, the method comprising:
- forming a magnetic material layer above a substrate;
- transferring an uneven pattern to the magnetic material layer to form concave portions and convex portions, the convex portions being magnetic regions;
- forming a laminate layer on sidewalls of the concave portions of the magnetic material layer, the laminate layer including an organic material layer and an oxide layer and/or hydroxide layer deposited after the organic material layer thereby sandwiching the organic material layer between the magnetic material layer and the oxide layer and/or hydroxide layer;
- wherein the organic material layer exhibits a corrosion-inhibiting characteristic with respect to cobalt or cobalt alloy;
- and
- depositing a nonmagnetic material within the concave portions to form nonmagnetic regions.
Dependencies are inferred from the claim text.