Crystal form and surface morphology of modulated structures

The morphological consequences of a displacive modulation of the crystal structure have been investigated. The morphology can be divided in a main part, relatively unperturbed by the properties of the modulation wave, and a so-called satellite morphology. In-situ optical microscopy shows that these satellite faces behave as normal F faces, though the bonding nature of these new type of faces is still ill understood.