2.
Local environments around Fe3+ sites on the octahedral sublattice of the monoclinic phase of magnetite. The red, blue, and yellow circles denote Fe2+, Fe3+, and the octahedrally coordinated Fe3+ vacancy sites, respectively. Subfigures (a), (b), and (c) show environments with 3, 2, and 1 Fe3+ neighbors, respectively.
