  We have investigated the RE atomic distribution and its magnetic moment
orientation at the region near the surface of DyCo$_{4.4 \& 4.6}$ ferrimagnetic
amorphous films with perpendicular magnetic anisotropy (PMA). XMCD spectroscopy
of the films at the Dy $M_{4,5}$ and Co $L_{2,3}$ edges using total electron
yield (TEY) detection was performed at 2 K and 300 K temperatures, and at
sample orientations ranged from 0$^{\circ}$ to 70$^{\circ}$ with respect to the
magnetic easy axis. The measurements showed an apparent partial decoupling
between the cobalt and dysprosium magnetic sublattices. At RT, the magnetic
moment per atom of dysprosium was below the minimum value expected if all
dysprosium moments were AF coupled to cobalt. At 2 K, the cobalt sublattice
presented a stronger magnetic anisotropic behavior than the dysprosium
sublattice. A detailed analysis of the circularly polarized spectra of the Dy
$M_{5}$ edge, based on the deconvolution of the spectra in their related
parallel, antiparallel and transverse to $J_{z}$ spectral components,
demonstrates that the spectra are composed by dysprosium with different
magnetic moment distributions. The fit of the Dy $M_{5}$ spectra using the
$J_{z}$ spectral components evidenced a gradation of dysprosium concentration
due to segregation at the region probed by TEY. The topmost layer was
magnetically uncoupled from cobalt. At RT, 25$\%$ of the dysprosium magnetic
moments in the under layer were found averaged oriented in the same direction
as cobalt. The expected weak magnetic coupling of these dysprosium atoms to
cobalt would explain the surprisingly lower magnetic anisotropy of the
dysprosium sublattice compared to that of cobalt probed by TEY at 2 K.

Materials Science