A perpendicular magnetic recording medium having a substrate, a Cr-doped Fe-alloy-containing underlayer containing about 8 to 18 at % Cr and a perpendicular recording magnetic layer, and a process for improving corrosion resistance of the recording medium and for manufacturing the recording medium are disclosed.
R. Thangaraj, M. Munteanu, E. Girt, M. Stirniman, T. Nolan, “Perpendicular media with Cr-doped Fe-alloy-containing soft underlayer (SUL)”, Country USA, Patent #7,998,606, issued on Aug 16, 2011.
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