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US 6,475,611 B1Granted
Si-containing seedlayer design for multilayer media
AssigneeSeagate Technology LLC
InventorGa-Lane Chen
Life of this patent
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Abstract
A multilayer superlattice having a structure with many interfaces of magnetic/non-magnetic layers could increase the coercivity of a magnetic recording medium by increasing the interfacial anisotropy. A Si-containing seedlayer between a soft underlayer and the multilayer superlattice further boosts the coercivity of the magnetic recording medium.
Claims15
A magnetic recording medium comprising:
- a substrate;
- a multilayer superlattice comprising 5-100 bilayers of a magnetic layer and a non-magnetic layer;
- and
- a Si-containing seedlayer interposed between the underlayer and the multilayer superlattice, wherein the magnetic recording medium has a coercivity of more than 2000 Oe.
1 more element
A method of manufacturing a magnetic recording medium, the method comprising:
- sputter depositing a Si-containing seedlayer on a substrate;
- and
- sputter depositing a multilayer superlattice comprising 5-100 bilayers of a magnetic layer and a non-magnetic layer, wherein the magnetic recording medium has a coercivity of more than 2000 Oe.
Dependencies are inferred from the claim text.