Figure 4

Evolution of the structural parameters of the MnAs microstructures at RT, as function of the lateral size in the two orthogonal directions (L a and L c ). (a) The α fraction varies from 75% for the largest microstructure (12 × 12 μm 2) to 100% for the smallest one (0.75 × 0.75 μm 2). The peak position shift (related to the lattice parameter normal to the surface) and its width are also extracted for each lithographed microstructure and are shown in panels (b) and (c) (see text for details). The α/β stripes are oriented perpendicular to the impinging X-ray beam.