Figure 1

Schematic representation of the crystal and electronic structure for V₃O₄.

(a) Unit cell of V₃O₄; (b) The calculated DOSs of the V₃O₄. The DOSs above zero are corresponding to the spin-up states and the other to the spin-down states; (c) Schematic spin structure of V³⁺ and V²⁺ in octahedral and tetrahedron sites, respectively.