Abstract
Electron microscopy techniques were used to characterise the commensurate and incommensurate superstructures formed after the addition of cations to the isostructural compounds Bi 2Se 3, Bi 2Te 3 and Sb 2Te 3. The observed electron diffraction patterns were analysed, using a method closely related to the “cut and projection” method, hereby assuming the building blocks of the superstructures to be 5-layer and 7-layer lamellae. This assumption was confirmed by high resolution electron microscopy images.
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