The zero-field splitting (ZFS) parameters D, E and F for an Mn 2+ centre in a BiVO 4 single crystal are calculated using the point-charge electrostatic model and the superposition model. The calculated ZFS parameters at the Bi and V sites are compared with the experimental values for Mn 2+ . The calculated second-order axial and rhombic ZFS parameters at the Bi site turn out to be similar to those from experiment. The superposition model and the point-charge model give similar results. This supports the notion that the Mn 2+ impurity substitutes for the Bi 3+ ion in BiVO 4 .
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Yeom et al. (1993) studied this question.
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