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Experimental techniques using Bragg diffraction may elucidate electronic andmagnetic properties of ferric ions in multiferroic ScFeO3 that are puzzling. Acollinear magnetic motif of dipole moments is not expected for s-state ionswith an acentric parent (paramagnetic) structure, because single-siteanisotropy is negligible and antisymmetric exchange interactions promote aninhomogeneous magnetic motif. However, current indications are that ScFeO3supports G-type antiferromagnetism, with an unknown moment direction, whichimplies that ferric ions are not in the high-spin 6S state. It is argued thatsignificant insight on these open questions can be achieved by confrontingexperimental data with calculated structure factors for resonant x-ray andmagnetic neutron Bragg spots, and we report results for G-typeantiferromagnetism allowed by the corundum-like parent R3c structure.Calculated structure factors include Dirac multipoles that are time-odd andparity-odd, e.g., dipoles that are often called anapoles or toroidal moments.

Electronic and magnetic properties of multiferroic ScFeO3