Jc. Lang et al., ANGULAR-DEPENDENCE OF CIRCULAR MAGNETIC-X-RAY DICHROISM IN RARE-EARTHCOMPOUNDS, Physical review. B, Condensed matter, 50(18), 1994, pp. 13805-13808
The angular dependence of the circular magnetic x-ray dichroism (CMXD)
at the L(2) and L(3) edges of grain-oriented RFe(2) compounds has bee
n studied to ascertain the multipolar nature of the features above and
below the absorption edge. Within experimental error, all features in
the CMXD spectra are consistent with dipole transitions between 2p co
re levels and the unoccupied spin-polarized states. We discuss some po
ssible reasons for the apparent absence of the predicted quadrupolar a
ngular dependence of the features below Ef.