A magnetic recording medium having a soft magnetic underlayer structure
that includes two soft underlayers is presented. A thick first soft
underlayer, disposed on the medium substrate, is made of material which
provides a low magnitude of magnetization saturation (Bsat) and high
permeability. The first soft underlayer can be formed by plating or
high-rate sputtering. The second soft underlayer, which has a lesser
thickness than the first soft underlayer, is made of a material which
provides a relatively high magnitude of Bsat and low permeability. The
second soft underlayer can be formed by low-rate sputtering. The first
soft under layer can be isolated from other layers in the medium by an
exchange isolation layer. The second soft underlayer can be exchange
coupled to a radial exchange pin layer disposed on the exchange isolation
layer.