Abstract
X-ray resonance exchange scattering has been measured at the Nd L 2,3 absorption edges on the (440) Bragg reflection in a ferromagnetic Nd 2 Fe 14 B single crystal. The magnetic spectrum at the L 2 -edge reflects the spin polarization of unoccupied 5 d -bands of Nd due to electric dipole transitions. The magnetic spectrum at the L 3 -edge shows a more complicated structure than that at the L 2 -edge. The difference in magnetic spectra between the L 2 - and L 3 -edges is discussed from the viewpoints of L S coupling in 5 d -bands and the contributions of electric quadrupole transitions to the highly localized and partially vacant 4 f -states.
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