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US 9,318,140 B2Granted
Exchange enhanced cap manufactured with argon and oxygen implantation
AssigneeHGST Netherlands B.V.
InventorsGunn Choe, Yoshihiro Ikeda
Life of this patent
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Abstract
A magnetic media having a novel cap layer that allows the cap layer having improved exchange coupling and reduced thickness. The cap layer is doped with a non-reactive element such as Ar, Kr, Xe, Ne or He preferably Ar. This doping reduces increases exchange coupling and reduces the dead layer, allowing the cap layer to be made thinner for reduced magnetic spacing and improved data recording performance.
Claims10
A magnetic media, comprising:
- a magnetic recording layer;
- and
- a magnetic cap layer formed over the magnetic recording layer, the magnetic cap layer comprising a first portion and a second portion each comprising Co, Cr and Pt, the first and second portions being coextensive with each other and being arranged such that the first portion is between the magnetic recording layer and the second portion and wherein only the second portion is substantially uniformly doped with a non-reactive element selected from the group consisting of Ar, Kr, Xe, Ne, He or combinations thereof.
A magnetic data storage system, comprising:
- a housing;
- a magnetic media mounted within the housing, the magnetic media comprising a magnetic recording layer, and a magnetic cap layer formed over the magnetic recording layer, the magnetic cap layer comprising a first portion and a second portion each comprising Co, Cr and Pt, the first and second portions being coextensive with each other and being arranged such that the first portion is between the magnetic recording layer and the second portion and wherein only the second portion is substantially uniformly doped with a non-reactive element selected from the group consisting of Ar, Kr, Xe, Ne, He or combinations thereof;
- an actuator;
- and
- a slider connected with the actuator for movement adjacent to a surface of the magnetic media.
2 more elements
Dependencies are inferred from the claim text.