Adsorption and crystal growth

Abstract

It is shown all along this chapter that in the case of crystal growth governed by surface kinetics, foreign adsorption on the interface may intervene to a large extent in the overall process. Moreover, the mechanism of subsequent overgrowth can be gathered from the shape of the adsorption isotherms. The growth mode in a pure system depends of the thermal roughness which can be treated as self‐adsorption of molecules and molecular vacancies. Finally, foreign adsorption on a rough surface, just as strain due to structural misfit, may result in the formation of surface alloys.

Impurity Effects on Habit Change and Polymorphic Transitions in the System: Aragonite–Calcite–Vaterite

“…In the first case, a diluted 2D adsorbed gas coexists, on the substrate, with a 3D condensed phase (Volmer–Weber growth mechanism); in the second case, a condensed and stable 2D-phase can appear, at unsaturation of the adsorbed species with respect to its 3D-phase . All these sophisticated physisorption cases mainly concern adsorption of gases (Kr, Xe, methane) on exfoliated (0001) graphite − and have been recollected in an exhaustive review by Mutaftschiev …”