Structural deviations from ideal layering can have a marked effect on
the physical properties of multilayers. Using X-ray diffraction and cr
oss-sectional transmission electron microscopy as the structural probe
s, we have systematically identified the presence of a variety of stru
ctural imperfections in sputtered Co/Cu multilayers. By constructing a
structural model which realistically represents the multilayer struct
ures, we attempt to extract structural data on the regularity of layer
ing and interfacial roughness through the fitting of low-angle X-ray d
iffractograms.