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US 2009/0155628 A1Published application
Magnetic thin film structure, magnetic recording medium including the same, and method of manufacturing the magnetic recording medium
AssigneeSamsung Electronics Co., Ltd.
InventorsMyung-bok LEE, Jin-seung SOHN, Seong-yong YOON
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Abstract
A magnetic thin film structure, a magnetic recording medium including the same, and a method of manufacturing the magnetic recording medium are provided. The magnetic recording medium includes an under layer formed of a transition metal nitride on a substrate and a plurality of magnetic dots, which are unit recording regions, formed of a magnetic material having magnetic anisotropy energy between 106 erg/cc and 108 erg/cc.
Claims25
A magnetic recording medium comprising:
- a substrate;
- an under layer disposed on the substrate and formed of a transition metal nitride;
- a magnetic recording layer disposed on the under layer and comprising a plurality of dots formed of a magnetic material having high magnetic anisotropy energy, and a non-magnetic region between the dots, formed of a material different from the magnetic material.
A method of manufacturing a magnetic recording medium, comprising:
- forming an under layer of a transition metal nitride on a substrate;
- forming a mold layer on the under layer;
- patterning the mold layer to expose the under layer between patterns;
- forming dots by disposing a magnetic material on portions of the under layer exposed between the patterns;
- and
- heat treating the dots in order for the dots to have a L10 structure.
3 more elements
A magnetic thin film structure comprising:
- an under layer formed of a transition metal nitride;
- and
- a magnetic layer having a L10 structure and formed on the under layer.
Dependencies are inferred from the claim text.