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The step-induced uniaxial magnetic anisotropy of fcc Co films grown on a curved Cu(001) substrate was investigated in the vicinal angle range of 0^∘{} to 6^∘{}. The anisotropy strength was found to depend linearly on the step density, indicating that biaxial strain due to in-plane lattice misfit is not the origin of the step-induced anisotropy. By performing Cu adsorption experiments, we found that the magnetization easy axis switches by 90^∘{} when the Co steps are decorated with {~}1 atomic row of Cu per step, independent of the step density.
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Kawakami et al. (1998) studied this question.
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