Figure 4From: Carbon doping induced imperfections on MgB2 superconducting wire Detailed analysis of the grain boundary. (a) Filtered ADF-STEM image of 5° titled MgB2 boundary, showing the edge dislocation structure at the boundary. (b) Atomistic description of the selected area in (a). The Mg-Mg boundary is observed under only boron extra half plane.Back to article page