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Figure 1

From: Latent Order in High-Angle Grain Boundary of GaN

Figure 1

High-resolution high-angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) images of the high-angle grain boundaries (GBs) in the GaN films: (a) Σ = 7 boundaries and (b) nonperiodic boundaries. Each set of solid or dashed lines denotes a bond pair used for measuring the relative angle. (c) Mean value and standard error for all angles measured between two bond pairs classified into each type of core structure. The colored lines in (a,b), and symbols in (c), represent the type of core: red = 5/7(S), green = 5/7(M), and blue = 8 cores.

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