Because our model is less accurate for meta-stable and unstable materials that are less likely to be able to be synthesized, we show D T (T ∈ [800, 1500] K) predictions in Figure -f only for materials with E H < 0.025 eV/atom. We denote the eigenvalues of D T as λ T , their average as the mean diffusivity, λT , and the ratio between the maximum and minimum eigenvalues as the diffusion anisotropy, λ aniso