Patent ID: 7115191

Claim:
A method for manufacturing a magnetic recording disk, comprising: preparing magnetic-recording-layer preparation on a substrate; and preparing an anisotropy-allowing-layer on the substrate prior to the magnetic-recording-layer preparation; the anisotropy allowing layer allowing magnetic anisotropy to the magnetic recording layer; the anisotropy-allowing layer being made of nitride of niobium, tantalum, niobium alloy or tantalum alloy; or nitrogen-including niobium, tantalum, niobium alloy or tantalum alloy; the anisotropy-allowing layer being prepared by a sputtering as a larger number of sputtered particles having direction components alone tangents of circles coaxial to the substrate are made incident on the substrate than sputtered particles not having direction components along tangents of circles coaxial to the substrate, so that magnetic anisotropy to the magnetic recording layer is allowed where coercive force is higher when magnetized alone tangent directions than when magnetized along radius directions of the substrate.