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US 2003/0203189 A1Published application
Perpendicular magnetic recording medium and magnetic recording appparatus
AssigneeHitachi, Ltd.
InventorsMasaaki Futamoto, Yoshiyuki Hirayama, Yukio Honda, Atsushi Kikukawa
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Abstract
To provide an improved perpendicular magnetic recording medium suitable for high density magnetic recording. In a perpendicular magnetic recording medium comprising a perpendicular magnetic layer and protective layer provided on a non-magnetic substrate via a soft magnetic backlayer, a polycrystalline MgO film is inserted between the soft magnetic backlayer and perpendicular magnetic layer.
Claims7
A perpendicular magnetic recording medium comprising:
- a non-magnetic substrate,
- a soft magnetic backlayer formed on the non-magnetic substrate,
- a perpendicular magnetic layer formed above the soft magnetic backlayer,
- a polycrystalline MgO film inserted between the soft magnetic backlayer and the perpendicular magnetic layer.
1 more element
Dependencies are inferred from the claim text.