STRUCTURES CONTAINING SHIFT-LATTICE DISTRIBUTED PLANAR FAULTS

Structures which can be considered to be built up from slabs of identi cal material, each displayed by a constant amount with respect to its neighbours, are described in terms of the shift lattice and the genera l form of their diffraction patterns has been derived. The theory is i llustrated by reference to the (M,Ti)O-2-x crystallographic shear (CS) structures, the alloy Au5Mn2 antiphase domain structure and a number of hypothetical constructions.