NiFe-containing soft magnetic layer design for multilayer media

摘要

A multilayer superlattice having a structure with many interfaces of magnetic/non-magnetic layers could increase the coercivity of a magnetic recording medium by increasing the interfacial anisotropy. A soft magnetic layer comprising interstitial nitrogen between the substrate and the multilayer superlattice reduces the surface roughness between the substrate magnetic layer. This in turn reduces the fly height and boosts the coercivity of the magnetic recording medium.