Electromigration-driven Evolution of the Surface Morphology and Composition for a Bi-Component Solid Film
arXiv:1412.4642 · doi:10.1051/mmnp/201510405
Abstract
A two PDEs-based model is developed for studies of a morphological and compositional evolution of a thermodynamically stable alloy surface in a strong electric field, assuming different and anisotropic diffusional mobilities of the two atomic components. The linear stability analysis of a planar surface and the computations of morphology coarsening are performed. It is shown that the conditions for instability and the characteristic wavelength and growth rate differ from their counterparts in a single-component film. Computational parametric analyses reveal the sensitivity of the scaling exponents to the electric field strength and to the magnitude of the anisotropies difference.
References in corpus (8)
- Dynamics of Phase Separation of Crystal Surfaces
- Current-Induced Step Bending Instability on Vicinal Surfaces
- Local electromigration model for crystal surfaces
- Electromigration-Induced Step Meandering on Vicinal Surfaces: Nonlinear Evolution Equation
- Nonlinear wavelength selection in surface faceting under electromigration
- Electromigration-Induced Propagation of Nonlinear Surface Waves
- Analysis of a combined influence of substrate wetting and surface electromigration on a thin film stability and dynamical morphologies
- Self-Assembled Nanostructure Formation in Chemical Vapor Deposition