Rjd. Tilley et Rp. Williams, A SHIFT-LATTICE INTERPRETATION OF STRUCTURES IN THE AU4MN REGION OF THE AU-MN SYSTEM, Australian Journal of Chemistry, 49(8), 1996, pp. 873-882
The structures of a number of ordered phases in the Au-Mn system deriv
ed from the face-centred cubic structure of Au4Mn have been described
in a systematic manner by use of shift-lattice distributions of the ma
nganese atoms throughout the matrix of the alloys. The simplest struct
ures are describable in terms of one-dimensional shift lattices, but m
any are best treated as two- or three-dimensional shift lattices. This
approach has allowed structural correlations to be presented that hav
e not been described previously and the variation in stoichiometry of
these phases to be accounted for without recourse to defect population
s. The diffraction patterns of such structures are also discussed, esp
ecially incommensurate patterns from materials with 'infinitely large'
crystallographic unit cells.