Molecular-Beam Epitaxially Grown MgB₂ Thin Films and Superconducting Tunnel Junctions

Figure 4

X-ray characterization of MBE-grown MgB₂: (a) X-ray diffraction of a 200 nm film, showing only the MgB₂(00l) diffraction peaks in addition to substrate peaks; (b) Reflectivity scan of a MgB₂ thin film. The film thickness and roughness amplitude are extracted from the simulation fit to the data.

(a)

(b)