Abstract
Compositionally modulated DyFeCo films, prepared in a co-sputtering system incorporating a variable speed, rotating, substrate table, have structures that change from homogeneous mixtures of the different components to discrete layers of the different target materials. Films are characterised by measurement of magnetic, thermo-magnetic, and magneto-optic properties. Optimum thermo-magnetic recording characteristics are found in the films with the Dy, rare earth, layer approximately one atom thick.
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