| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thin Films and Coatings: Properties, Processing and Applications
|
| Presentation Title |
Strain Effects on Adatom Diffusion, Island Nucleation and Monolayer Growth on Metal and Oxide Surfaces |
| Author(s) |
Ahmad Ahmad, Anter El-Azab |
| On-Site Speaker (Planned) |
Ahmad Ahmad |
| Abstract Scope |
Multiphase thin films grown by pulsed laser deposition have gained much interest owing to their unique strain-coupled properties. Due to lattice and elastic mismatches, elastic strains impact diffusion, self-organization and growth of thin film. The diffusion and binding of adatoms and molecules on substrates depend on both their type and the atomic structure of the surface. We use density functional theory (DFT) to understand the impact of strain on surface bonding, diffusion and clustering of adatoms and molecules. We do Au and CeO2 species on Au, CeO2 MgO, and SrTiO3 surfaces. The DFT calculations are utilized to parameterize kinetic Monte Carlo simulations of diffusion to demonstrate the impact of strain on self-organization and island nucleation of atoms on surfaces. It was found that straining the substrate makes diffusion anisotropic, which impacts the clustering, island formation and self-organization on the surface. In this presentation we report the relevant results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Modeling and Simulation, Other |