text: Domain walls are spatially extended regions of transition mediating the transfer of the order parameter from one domain to another. In comparison to the domains the domain walls are not homogeneous and they can have a lower symmetry. This may modify the properties of a multiferroic and the coupling of its order parameters. Multiferroic domain walls may display particular static and dynamic properties.
  Static properties refer to stationary walls. They can result from
  *The reduced dimensionality
  *The finite width of the wall
  *The different symmetry of the wall
  *The inherent chemical, electronic, or order-parameter inhomogeneity within the walls and the resulting gradient effects.