Magnetic circular dichroism at transition metal L(2,3-)edges in DO3-type (Fe1-xVx)(3)Al alloys

Magnetic circular dichroism (MCD) spectra have been measured at the Fe and V L-2,L-3 edges of D0(3)-type (Fe1-xVx)(3) Al in order to investigate their local magnetic moments and electronic structures. Large MCD is observed at the Fe L-2,L-3 edges, while the V L-2,L-3 MCD shows relatively small inten sity with complicated features. Signs of these MCD spectra indicate an anti ferromagnetic coupling between the magnetic moments on Fe and V. According to the analysis based on the magneto-optical sum rules, the magnetic moment decreases with x, but remains fairly large for Fe2VAl, which might arise f rom its marginally magnetic nature.