The magnetic properties of Cu/Fe epitaxial sandwiches and superlattices have been measured using Brillouin light scattering and ferromagnetic resonance. All of the samples are perpendicularly magnetized at room temperature, due to the presence of large uniaxial anisotropies with an easy axis perpendicular to the sample surface. Inclusion of a second-order uniaxial anisotropy term is particularly important for one of the superlattice samples.
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Dutcher et al. (1988) studied this question.
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