Figure 5

XRD patterns. XRD patterns measured by synchrotron radiation for reflections of MnAs $(1\overline{1}00)$ in the specular geometry, $(11\overline{2}0)$ and (0002) in the grazing incidence geometry for samples A (black), B (blue), C (wine), and D (red). The radial scan along MnAs (0002) of sample C can be fitted well by two peaks centered at 31.44 and 31.61 which can be ascribed to MnAs (0002) and GaAs (002), respectively (d).