Patent ID: 8034471

Claim:
A perpendicular magnetic recording medium comprising: a non-magnetic substrate; and at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer, which are formed on the non-magnetic substrate in order from the bottom, wherein the orientation control layer has a laminated structure of two or more layers comprising an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer, the seed layer comprises two or more elements having a face-centered cubic structure, the seed layer has face-centered cubic crystal structure which (111) plane is oriented in a direction perpendicular to a substrate surface, and the seed layer has a pseudo-hexagonal structure, a film thickness of the seed layer is equal to or greater than 3 nm and equal to or less than 10 nm, the seed layer is formed directly on the soft magnetic underlayer, and the soft magnetic underlayer has a soft magnetic amorphous structure.