Magnetic component
AssigneeUniversität Konstanz
InventorsGünter Schatz, Manfred Albrecht, Mireille Maret, Andreas Maier, Frank Treubel
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Abstract
The invention relates to an element, comprising a substrate with a surface roughness of less than 5 nm, with saturated bonds on the surface and an MPt3 film applied to at least one side of the substrate, with a magnetic anisotropy perpendicular to the plane of the film, with M=a metal of the 5th to 9th sub-group of the periodic table, nickel or gadolinium. The invention further relates to a method for production of the above and the use of said elements as a magnetic component, for example as a magnetic sensor or as a magneto-optical storage element.
Claims12
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 MPt3 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 5th to 9th 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.
Dependencies are inferred from the claim text.