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The anisotropic g factors g and g ⊥ of La2Ni0.5Li0.5O4 are theoretically investigated using the perturbation formulae of the g factors for a low spin (S = 1/2) 3d 7 ion in tetragonally elongated octahedra. The studied Ni 3+ (3d 7 ) center arises from the original Ni 2+ capturing one hole by Li + doping. The positive anisotropy ∆g (= g ⊥ − g ) can be ascribed to the lowest 2 A1g state due to the obvious (about 0.14 Å) tetragonal elongation of the oxygen octahedron around the Ni 3+ site via thedoi:10.12693/aphyspola.123.734 fatcat:os4bosb6ynch5jl7pfc2yohnze