A systematic method to identify the space group from PED and CBED patterns part II – practical examples

Precession Electron Diffraction and Convergent-Beam Electron Diffraction are used in a complementary way to determine the space group of three known structures following the general method described in the first part of this paper. The selected structures concern a monoclinic example (coesite SiO2 with space group C2/c) and two cubic examples (γ-Al4Cu9 with space group P4̄3m and pyrite FeS2 with space group Pa3̄). For each case, a minimum number of zone axis patterns are used to determine the space group without ambiguity, which illustrates the simplicity and reliability of the method.