Patent ID: 7974028

Claim:
A magnetic transfer master carrier comprising: a base material having convex portions on its surface, the convex portions being provided corresponding to a pattern of information to be recorded on a perpendicular magnetic recording medium; and a magnetic layer deposited at least on top surfaces of the convex portions, wherein when a magnetic field is applied to the magnetic transfer master carrier, the magnetic layer absorbs a magnetic flux so as to form a pattern of the magnetic field, wherein the magnetic layer comprises: at least two perpendicular magnetic anisotropic layers; and an antiferromagnetic coupling induction layer which is provided so as to be sandwiched in between two neighboring layers of all the perpendicular magnetic anisotropic layers, and to induce antiferromagnetic coupling therebetween, wherein when in the two perpendicular magnetic anisotropic layers sandwiching the antiferromagnetic coupling induction layer, a residual magnetization Mr u of one of the perpendicular magnetic anisotropic layers deposited close to each convex portion is multiplied by a thickness t u thereof to give Mr u t u , and a residual magnetization Mr l of the other perpendicular magnetic anisotropic layer is multiplied by a thickness t l thereof to give Mr l t l , a ratio of Mr u t u to Mr l t l , Mr u t u /Mr l t l , is 0.5 to 2.