Abstract
Au1-xCox (x=0.01-0.94) alloy films were prepared by rf magnetron sputtering onto water-cooled glass substrates. It was found that a non-equilibrium fcc phase appeared in the compositional range of x<0.48. Au-Co non-equilibrium alloy films exhibit Kerr spectra with two peaks at 1.4eV and 3.5 eV. Their spectral shape is completely different from that for the Au/Co multilayered film with nearly the same Co content, which impies Au and Co atoms in sput- tered Au-Co alloy films are mixed each other in atomic scale.
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