In one embodiment, a magnetic recording medium comprises an underlying
film, a magnetic film and a protective film formed in this order on a
substrate. The magnetic film is a cobalt-base alloy film containing
chromium and has a plurality of magnetic layers stacked without
interposition of any non-magnetic layer. The plural magnetic layers
comprise first, second and third magnetic layers. The first magnetic
layer is disposed between the underlying film and the second magnetic
layer. The second magnetic layer is disposed between the first magnetic
layer and the third magnetic layer. The third magnetic layer is disposed
between the second magnetic layer and the protective film. The
concentration of chromium contained in the first magnetic layer is lower
than that of chromium contained in the second magnetic layer. The
thickness of the first magnetic layer is smaller than that of the second
magnetic layer. The magnetic layers which overlie the first magnetic
layer further contain platinum and boron. The concentration of chromium
contained in the third magnetic layer is lower than that of chromium
contained in the second magnetic layer.