First-principles study of solute diffusion in Ni3Al
Liu Shaohua1, Li Zi2, Wang Chongyu3, †
       

(color online) Atomic configuration for ordered L12 Ni3Al, with possible directions of the vacancy jumps and possible types of point defects. Ni atoms occupy the face-centered sites and Al atoms locate at the corner position. The arrows show nearest-neighbor (NN) and next-nearest-neighbor (NNN) vacancy jumps.