Patent ID: 7070869

Claim:
An element comprising a substrate having a surface roughness of less than 5 nm, no free covalent or ionic bonds on the surface, magnetic layer directly applied to at least one side of the substrate at a deposition temperature of 20 to 200° C., and a said magnetic layer possessing a coercivity of at least 200 Oe magnetic anisotropy perpendicular to the plane of the layer, wherein the layer consists essentially of a MPt 3 alloys and the grain size of crystal particles forming the magnetic layer is less than 20 nm, wherein M is selected from a metal of the 5 th to 9 th sub-group of the periodic table, nickel or gadolinium, wherein the substrate is selected from the group consisting of semiconductor films, graphite films and polymer films, and wherein said substrate possesses a higher surface mobility of adsorbed M and Pt atoms relative to a metallic platinum substrate.