MAGNETIC XANES OF CIRCULARLY POLARIZED X-RAY ABSORPTION ON FE AND NI METALS AND ND2FE14B COMPOUND

Magnetic effects in the X-ray absorption process have been measured using circularly polarized X-rays emitted from an elliptical multipole wiggler. Magnetic XANES spectra on the K-edge of Fe and Ni taken by the transmission method show positive and negative spin polarizations, respectively, near the Fermi level which are consistent with the results in literature. A large positive magnetic XANES spectrum on the Nd L2-edge of Nd2Fe14B compound measured by the fluorescent method indicates that the unoccupied 5d-bands are polarized due to a significant hybridization between 4f- and 5d-states. The magnetic XANES spectrum on the Nd L3-edge has a structure below the Fermi level, suggesting a quadrupole transition contribution of the partially vacant majority band of 4f-states.