Figure 2: Diffusion coefficients and migration barriers of Ci at GBs.
From: The Multiple Roles of Small-Angle Tilt Grain Boundaries in Annihilating Radiation Damage in SiC
(a) Arrhenius plot of diffusion coefficients of Ci at [001] tilt GBs; numbers at the ends of each line represent the extrapolated migration barrier in eV; (b) The migration barrier as a function of distance between C atoms along the minimum energy pathway. The inset shows the binding energy of Ci forming a dumbbell at different lattice sites near a dislocation core in [001] Σ85 STGB. Negative binding energy (colored blue) means that the site is energy favorable for Ci. Large spheres represent Si atoms, and small spheres represent C atoms.
