It was recalled that the statistical modulated phases which occurred at high temperatures in a number of alloy systems could not be explained in terms of an axial Ising mode, or by using arguments which were based upon the interaction of Fermi surfaces and Brillouin zones. It was instead argued here that these phases were stabilized by local disordering at antiphase boundaries. This assumption was supported by the results of density functional calculations which were performed within the local density approximation.

A.T.Paxton, H.M.Polatoglou: Physical Review Letters, 1997, 78[2], 270-3