Figure 6
Small-angle X-ray scattering profiles (line) recorded in grazing-incidence mode on a set of Au + Cu-implanted silica slides. In the sample name the number after each element symbol indicates the corresponding implantation dose in units of 1016 ions cm-2. The sample Au3Cu6H was heated in H2 (4%) atmosphere for 1 h at 1173 K after sequential Au + Cu implantation. The two-dimensional spectra were recorded on the ID10B beamline (ESRF), then radially integrated to obtain monodimensional profiles, accounting for the X-ray refraction at sample surface (Martorana et al., 2001). The curves are scaled to a common amplitude of the maximum for an easier comparison. The results of the best fits with the LMA model, and whose parameters are shown in Table 1, are also shown (circles). |