fig3
From: Charge/orbital disordered states with smaller volume and higher entropy in transition-metal oxides
Figure 3. (A) Ferrimagnetic CO state viewed along the face-sharing VO6 chain and from the side of the chain. The yellow circles indicate oxygen ions. The x, y, and z axes are along the V-O bonds. (B) Ferromagnetic MO state viewed from the side of the chain. The a1g orbitals form the MO. (C) Energy per unit cell (open triangles) calculated by mean-filed approximation for the face-sharing octahedron d-p model with d2.5 as a function of compression/elongation along the V-V bond (ratio between the compressed/elongated V-V bond length and the original V-V bond length).
