Fig. 3: High uniaxial compressive strain in the MiGs nanostructures from interstitial intercalation.
From: Observation of 2D-magnesium-intercalated gallium nitride superlattices
a, A schematic of the three cases of intercalation of atomic sheets into non-van der Waals solids, represented by the MAX phase (left), the Guinier–Preston zone (middle) and the MiGs structure (right). b, Drift-corrected HAADF-STEM images with atomic resolution showing a typical region of the MiGs structure alongside a void (left). In the magnified view (right), the strain-mapping region and reference region are delineated by green and yellow dashed boxes, respectively. c, The out-of-plane (εc, left) and in-plane (εa, right) strain maps show atom-by-atom distance measurements in the strain-mapping region. d, Summary of the mean lattice constants and strain values in c. Scale bar, 5 nm (b).
