Magnetic Recording Medium, Production Process Thereof, and Magnetic Recording and Reproducing Apparatus
AssigneeShowa Denko K.K.
InventorHiroshi Osawa
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Abstract
A magnetic recording medium is provided which is capable of higher recording density and has a higher coercive force and a lower noise. A production method of the magnetic recording medium, and a magnetic recording and reproducing apparatus are also provided. The magnetic recording medium comprises at least a nonmagnetic undercoat layer, a nonmagnetic intermediate layer, a magnetic layer, and a protective layer, which are laminated in this order on a nonmagnetic substrate, and at least one of the layers of the nonmagnetic undercoat layer is made of a WV alloy or a MoV alloy.
Claims14
A magnetic recording medium comprising at least a nonmagnetic undercoat layer, a nonmagnetic intermediate layer, a magnetic layer, and a protective layer, which are laminated in ascending order on a nonmagnetic substrate,
- wherein at least one layer of said nonmagnetic undercoat layer is formed by a WV alloy or a MoV alloy.
A magnetic recording medium comprising at least a nonmagnetic undercoat layer, a stabilizing layer, a nonmagnetic intermediate layer, a magnetic layer, and a protective layer laminated in ascending order on a nonmagnetic substrate,
- wherein said stabilizing layer is antiferromagnetically bonded to said magnetic layer, and at least one layer of said nonmagnetic undercoat layer is formed by a WV alloy or a MoV alloy.
A method of producing a magnetic recording medium having at least a nonmagnetic undercoat layer, a nonmagnetic intermediate layer, a magnetic layer, and a protective layer laminated in this order on a nonmagnetic substrate, wherein at least one layer of said nonmagnetic undercoat layer is formed by a WV alloy or a MoV alloy.
A method of producing a magnetic recording medium having at least a nonmagnetic undercoat layer, a stabilizing layer, a non-magnetic coupling layer, a magnetic layer, and a protective layer laminated in this order on a nonmagnetic substrate, where said stabilizing layer is antiferromagnetically bonded to the magnetic layer, wherein at least one layer of said nonmagnetic undercoat layer is configured by a WV alloy or a MoV alloy.
Dependencies are inferred from the claim text.