MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING AND REPRODUCTION DEVICE

摘要

According to one embodiment, a magnetic recording medium with high magnetic recording characteristics and improved corrosion resistance is obtained. The magnetic recording medium includes a substrate, an orientation control layer provided on the substrate and made from a Ni alloy or an Ag alloy, a nonmagnetic seed layer provided to be in contact with the orientation control layer, a perpendicular magnetic recording layer containing Fe or Co and Pt as main components. The nonmagnetic seed layer is formed of Ag particles, Ge grain boundaries and a compound X, and the compound X is selected from an oxide, nitride or carbide of aluminum, titanium, chromium, silicon and tantalum and also distributed in both the Ag particles and Ge grain boundaries.

主权项

1. A magnetic recording medium comprising:
a substrate; an orientation control layer provided on the substrate and made from a nickel alloy or a silver alloy; a nonmagnetic seed layer provided to be in contact with the orientation control layer; a perpendicular magnetic recording layer containing iron or cobalt and platinum as main components, the nonmagnetic seed layer being formed of silver particles, germanium grain boundaries and a compound X, and the compound X being selected from the group consisting of an oxide, nitride or carbide of aluminum, titanium, chromium, silicon and tantalum and also distributed in both the Ag particles and Ge grain boundaries.