The application of electron microscopy and electron diffraction to solid state chemistry problems

The application of high-resolution electron microscopy and selected area electron diffraction to problems of solid state chemistry is illustrated by means of a number of case studies. Various stackings in mixed-layer compounds such as barium ferrites and lanthanum-thorium mixed oxides and in polytypic substances such as YSeF can be revealed by means of lattice and structure images. Detailed information on the domain structure of alloys such as Au ₅Mn ₂ and Au ₄Mn can be obtained by the use of structure images which reveal columns of single atoms (in Au ₄Mn) and (or) pairs of atoms (in Au ₅Mn ₂). Along inclined twin interfaces high-resolution electron microscopy allows the coincidence lattice on an atomic level to be revealed.