Magnetic recording media having a layered structure for perpendicular magnetization of a recording layer

摘要

A magnetic recording medium such as a magnetic disk comprises a substrate of NiP or ceramic glass on which is sputtered an underlayer of TiAl or other alloy which has a L1₀ structure or a disordered fcc structure. A magnetic layer of a cobalt alloy is then sputtered on the underlayer with the magnetic layer having a magnetization which is perpendicular to the layer. A carbon overcoat can be sputtered on the cobalt alloy magnetic layer with a lubricant layer deposited on the carbon overcoat.