Patent ID: 7781079

Claim:
A perpendicular magnetic recording medium, comprising: a substrate; a soft magnetic lining layer formed on the substrate; and a recording layer comprising a first recording layer, an auxiliary recording layer, and a second recording layer laminated in this sequence on the soft magnetic lining layer; wherein each of the first recording layer and the second recording layer is formed by a ferromagnetic layer having a magnetization easy axis perpendicular to the ferromagnetic layer; the auxiliary recording layer includes a plurality of magnetic particles that are mutually separated by non-magnetism members and are formed perpendicular to the ferromagnetic layer; the magnetic particles have magnetization easy axes uniformly angled at a predetermined angle selected within a range between 60° (degrees) and 80° (degrees) with reference to the ferromagnetic layer; and the auxiliary recording layer is exchange-coupled to the first recording layer and the second recording layer, and in contact with the first recording layer or the second recording layer.