Unsplit reflections

Images made in unsplit reflections do not reveal brightness differences due to orientation differences of the lattice, but they may exhibit domain contrast due to differences in the structure factor. This is the case for Dauphine twins in quartz, which are related by a 180° rotation about... [Pg.1087]

Fig. 7.1. Electron diffraction pattern along the [001] zone, in a tetragonal sample (from the observation of unsplit spots). In situ heating and cooling causes disorder reflected in the presence of diffuse scattering along the basic directions.

$Fig. 7.1. Electron diffraction pattern along the [001] zone, in a tetragonal sample (from the observation of unsplit spots). In situ heating and cooling causes disorder reflected in the presence of diffuse scattering along the basic directions.$

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