  Resonant magnetic x-ray scattering has been used to investigate the magnetic
structure of the magnetoelectric multiferroic DyMn2O5. We have studied the
magnetic structure in the ferroelectric phase of this material, which displays
the strongest ferroelectric polarisation and magnetodielectric effect of the
RMn2O5 (where R is a rare earth ion, Y or Bi) family. The magnetic structure
observed is similar to that of the other members of the series, but differs in
the direction of the ordered moments. In DyMn2O5 both the Dy and Mn moments lie
close to the b-axis, whereas in other RMn2O5 they lie close to the a-axis.
