Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 30, 2010
Patent Application Number
11231516
Date Filed
September 21, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A recording medium providing improved writeability in perpendicular recording applications includes a magnetic recording layer having an axis of magnetic anisotropy substantially perpendicular to the surface thereof, an exchange-spring layer ferromagnetically exchange coupled to the magnetic recording layer and having a coercivity less than the magnetic recording layer coercivity, and a coupling layer between the magnetic recording layer and the exchange-spring layer. The coupling layer regulates the ferromagnetic exchange coupling between the magnetic recording layer and the exchange-spring layer.
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