Nanostructure of Co/Cu multilayers

The nanostructure and local strain of \111\ fcc Co/Cu multilayers are studied by means of nuclear magnetic resonance. The atomic topology of the interface can be deducted from the NMR spectrum and the local strains from the shift in the hyperfine fields. The results show that the Co/Cu interface is a mixed monolayer and that the cobalt layers, including the interface, have uniform strain inversely proportional to the Co thickness (within experimental error) with the proportionality constant depending on the Cu thickness.