Patent ID: 6994924

Claim:
A magnetic recording medium, comprising: a protective film; a nonmagnetic substrate; a nonmagnetic base layer having a body-centered cubic structure and a (200) plane comprising a crystal-orientation parallel with a surface of the protective film; a nonmagnetic intermediate layer having a hexagonal close-packed structure and a (110) plane comprising a crystal-orientation parallel with the surface of the protective, film; a magnetic layer having a granular structure comprising hexagonal close-packed ferromagnetic crystal grains and oxide-based nonmagnetic grain boundaries surrounding the ferromagnetic crystal grains; a liquid lubricant layer, wherein the nonmagnetic base layer, the nonmagnetic intermediate layer, the magnetic layer, the protective film, and the liquid lubricant layer are sequentially stacked on the nonmagnetic substrate, and a nonmagnetic orientation control layer of a simple cubic structure formed between the nonmagnetic base layer and the substrate, and the crystal-orientation parallel with the film surface is the (110) plane.