About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
Elastic strain coupling in DFT-Informed Kinetic Monte Carlo Simulation of Multiphase Thin Film Growth |
Author(s) |
Anter El-Azab, Ahmad Ahmad |
On-Site Speaker (Planned) |
Anter El-Azab |
Abstract Scope |
Multiphase thin films grown via Pulsed Laser Deposition (PLD) technique have gained significant attention in recent years due to their unique physical functionalities. In films with pillar-in-matrix configurations, vertical interfaces induce interesting physical, optical and chemical properties. In this talk, we report on a recently developed multiscale computational model of film deposition and growth that is based on kinetic Monte Carlo (kMC) method coupled with continuum solution of the elastic strain arising from mismatch in the heterogeneous system. The elastic problem is cast in the form of Representative Volume Element (RVE) with average constraints and solved using Fast Fourier Transform (FFT). The coupled kMC-FFT framework is informed by Density Functional Theory (DFT) parameterization of diffusion and bonding energetics. The simulations reveal that the local strain can play a significant role in the phase separation mechanism of oxide-metal systems. The simulations are performed for Au-CeO2 film deposited on SrTiO3 (001) substrate. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Thin Films and Interfaces |