Abstract
The gyromagnetic (g) factors of vanadium (IV) (V4+) tetragonally-distorted octahedra in ‘bulk’ (where g-anisotropy Δg = g //−g ⊥>0) and surface (where Δg < 0) of metal oxides are studied from complete diagonalization method and perturbation theory method. The calculated g factors for small and large tetragonal distortions agree with the observed values of V4+ in ‘bulk’ and surface of metal oxides, respectively. So the sign of Δg for d 1 octahedra depend upon the magnitude of tetragonal distortion rather than the ground state as in the complementary d 9 octahedral clusters. Similar case can also be found for d 9 ions in tetragonally-distorted tetrahedral clusters.
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