title: Friction dependence on growth conditions in epitaxial films.
abstract: In investigating the growth kinetics of epitaxial films in situ by force microscopy, we have observed several instances where the lateral force contrast on the growing monolayer exhibits a strong dependence on the driving force for growth (i.e., solute concentration). We present results for three epitaxial growth systems in aqueous solutions: CaSO(3) on CaCO(3), PbSO(4) on BaSO(4), and BaSO(3) on BaSO(4). In each system, material grown at higher solute concentrations exhibits a friction higher than that of material grown at lower concentrations. These observations suggest a link between defect density and friction contrast in growing epitaxial films. An additional time-dependent behavior is observed in the CaSO(3)/CaCO(3) system, indicating an annealing process.
authors: Department of Physics, University of Arizona, Tucson, Arizona 85721, USA.
authors: Anne E
authors: AE
authors: Murdaugh
authors: Srinivas
authors: S
authors: Manne