About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
NOW ON-DEMAND ONLY - A Generalization of the Universal Equation of States to Develop Magnetic Interatomic Potentials |
Author(s) |
Isaac Toda-Caraballo, Jan Wróbel, Duc Nguyen-Manh |
On-Site Speaker (Planned) |
Isaac Toda-Caraballo |
Abstract Scope |
The use of atomistic simulations is extremely helpful in analysing the thermodynamics in metallic systems. DFT-based methods provide a powerful tool to describe phase stability, enthalpy and/or magnetic configurations, but are constrained to small systems due to a large computational cost. On the other hand, Molecular Dynamics can simulate large systems, although the incorporation of magnetism into the formulation is still an open matter. In this work, we present a Generalized Universal Equation of States (GUESs) which enables the formulation of novel approach to develop new Magnetic Interatomic Potentials (MIP). The GUES has been tested in a large dataset of DFT-base energies in ferromagnetic and antiferromagnetic iron with outstanding accuracy. This paved the way to develop a MIP for ferromagnetic iron, which has shown good performance in predicting a wide range of crystal lattices, elastic constants, forces in the lattice, vacancies, interstitials, transformation paths as well as 𝛾-surfaces. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Iron and Steel |