Dual-magnetic layer high anisotropy media with orientation initialization layer

摘要

A recording medium comprising a magnetic recording layer having an axis of magnetic anisotropy substantially perpendicular to the surface thereof, a soft magnetic underlayer disposed under the magnetic recording layer and physically coupled to the magnetic recording layer through one or more intermediate layers magnetically decoupling the soft magnetic underlayer from the magnetic recording layer, and an orientation initialization layer disposed between the magnetic recording layer and the soft magnetic underlayer.

主权项

1. A recording medium comprising:
a magnetic recording layer having an axis of magnetic anisotropy substantially perpendicular to the surface thereof; a soft magnetic underlayer disposed under the magnetic recording layer and physically coupled to the magnetic recording layer through one or more intermediate layers magnetically decoupling the soft magnetic underlayer from the magnetic recording layer, wherein the one or more intermediate layers comprise a heatsink layer and a non-magnetic interlayer disposed between the magnetic recording layer and an orientation initialization layer, wherein the one or more intermediate layers comprise a layer of (002) textured CrRu10B3 disposed over the orientation initialization layer, and a layer of (002) textured MgO disposed over the CrRu10B3 layer; and the orientation initialization layer disposed between the magnetic recording layer and the soft magnetic underlayer, wherein the orientation initialization layer comprises a single layer of MgO.