Patent ID: 8367155

Claim:
A manufacturing method of a magnetic recording medium prepared such that at least on a non-magnetic substrate, there are laminated a soft magnetic base layer, an orientation control layer that controls the orientation of the layer immediately thereabove, and a perpendicular magnetic layer with the magnetization easy axis thereof primarily orientated perpendicular to said non-magnetic substrate, wherein when configuring said perpendicular magnetic layer with two or more magnetic layers, and crystal-growing each layer so that the crystal grains that constitute each of the magnetic layers, together with the crystal grains that constitute said orientation control layer, form column-shaped crystals in a consecutive manner in a thickness direction, lamination of said orientation control layer is conducted while said substrate is being cooled or immediately after said substrate has been cooled, and wherein on a convexo-concave surface where an apex section of each of column-shaped crystals that constitute said orientation control layer is of a convex shape, a height from a top-most apex section of each of said column-shaped crystals to a level where a clearance with an adjacent column-shaped crystal is none, is not greater than an outer-most diameter of each of the column-shaped crystals.