Perpendicular magnetic recording medium
AssigneeShowa Denko K.K.
InventorsToshio Sugimoto, Ryo Kurita, Ajan Antony
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Abstract
A perpendicular magnetic recording medium includes: a nonmagnetic substrate; a soft magnetic backing layer formed above the nonmagnetic substrate; a nonmagnetic intermediate layer formed on the soft magnetic backing layer; and a magnetic recording layer formed on the nonmagnetic intermediate layer, the magnetic recording layer including a first ferromagnetic recording layer having perpendicular magnetic anisotropy, a coupling layer formed on the first ferromagnetic recording layer and made of Pd, Pt or alloy of Pd and Pt, and a second ferromagnetic recording layer formed on the coupling layer and having perpendicular magnetic anisotropy.
Claims11
A perpendicular magnetic recording medium comprising:
- a nonmagnetic substrate;
- a soft magnetic backing layer formed above said nonmagnetic substrate;
- a nonmagnetic intermediate layer formed on said soft magnetic backing layer;
- and
- a magnetic recording layer formed on said intermediate layer, said magnetic recording layer including a first ferromagnetic recording layer having perpendicular magnetic anisotropy, a coupling layer formed on said first ferromagnetic recording layer and made of Pd, Pt or alloy of Pd and Pt, and a second ferromagnetic layer formed on said coupling layer and having perpendicular magnetic anisotropy.
Dependencies are inferred from the claim text.