AVS 63rd International Symposium & Exhibition
    Advanced Surface Engineering Tuesday Sessions
       Session SE+NS+TF+TR-TuM

Paper SE+NS+TF+TR-TuM3
Nanoscale Atomic Arrangement in Multicomponent Thin Films Synthesized Far-from-Equilibrium

Tuesday, November 8, 2016, 8:40 am, Room 101C

Session: Nanostructured Thin Films and Coatings
Presenter: Kostas Sarakinos, Linköping University, Sweden
Authors: V. Elofsson, Linköping University, Sweden
G.A. Almyras, Linköping University, Sweden
B. Lü, Linköping University, Sweden
R.D. Boyd, Linköping University, Sweden
K. Sarakinos, Linköping University, Sweden
Correspondent: Click to Email
Synthesis of multicomponent thin films using vapor fluxes with a modulated deposition pattern is a potential route for accessing a wide gamut of atomic arrangements and morphologies for property tuning. In the current study, we present a research concept that allows for understanding the combined effect of flux modulation, kinetics and thermodynamics on the growth of multinary thin films. This concept entails the combined use of thin film synthesis by means of multiatomic vapor

fluxes modulated with sub-monolayer resolution [1], deterministic growth simulations and nanoscale microstructure probes. Using this research concept we study structure formation within the archetype immiscible Ag-Cu binary system showing that atomic arrangement and morphology at different length scales is governed by diffusion of near-surface Ag atoms to encapsulate 3D Cu islands growing on 2D Ag layers [2]. Moreover, we explore the relevance of the mechanism outlined above for morphology evolution and structure formation within the miscible Ag-Au binary system. The knowledge generated and the methodology presented herein provides the scientific foundation for tailoring atomic arrangement and physical properties in a wide range of miscible and immiscible multinary systems.

[1] “A METHOD OF CONTROLLING IN-PLANE COMPOSITIONAL MODULATION”, Patent Pending Application, PCT/EP2014/052831.

[2] V. Elofsson, G.A. Almyras, B. Lü, R.D. Boyd, and K. Sarakinos, “Atomic arrangement in immiscible Ag-Cu alloys synthesized far-from-equilibrium”, Acta Mater. 110, 114 (2016).