The influence of a nanoscale surface modulation periodicity of ion beam eroded substrates (ripples) on the interlayer exchange coupling in polycrystalline Fe/Cr/Fe thin films is investigated. Using 22 nm rippled substrates, we find a pronounced N\'eel coupling superimposed on the interlayer exchange coupling in Fe/Cr/Fe trilayers associated with a strong uniaxial anisotropy induced by the substrate topography. For longer periods the N\'eel contribution and uniaxial anisotropy become weaker and finally vanish in the case of a flat substrate and film. These results are obtained by applying a Stoner-Wohlfarth model on magnetic reversal loops measured by longitudinal magneto-optical Kerr effect magnetometry.
No takes yet. Share an insight, caveat, or question.
Körner et al. (2009) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: