Imperfections are not 0 K: free energy of point defects in crystals

I Mosquera-Lois, SR Kavanagh, J Klarbring… - Chemical Society …, 2023 - pubs.rsc.org
Defects determine many important properties and applications of materials, ranging from
do** in semiconductors, to conductivity in mixed ionic–electronic conductors used in …

Machine-learning potentials for crystal defects

R Freitas, Y Cao - MRS Communications, 2022 - Springer
Decades of advancements in strategies for the calculation of atomic interactions have
culminated in a class of methods known as machine-learning interatomic potentials …

Calculation of dislocation binding to helium-vacancy defects in tungsten using hybrid ab initio-machine learning methods

P Grigorev, AM Goryaeva, MC Marinica, JR Kermode… - Acta Materialia, 2023 - Elsevier
Calculations of dislocation-defect interactions are essential to model metallic strength, but
the required system sizes are at or beyond ab initio limits. Current estimates thus have …

An approach to evaluate the accuracy of interatomic potentials as applied to tungsten

IV Kosarev, SA Shcherbinin, AA Kistanov… - Computational Materials …, 2024 - Elsevier
Molecular dynamics (MD) is a powerful tool for modeling structural transformations in
metallic materials under irradiation, severe plastic deformation, laser processing, etc. The …

Defect modeling and control in structurally and compositionally complex materials

X Zhang, J Kang, SH Wei - Nature Computational Science, 2023 - nature.com
Conventional computational approaches for modeling defects face difficulties when applied
to complex materials, mainly due to the vast configurational space of defects. In this …

[HTML][HTML] Efficiency, accuracy, and transferability of machine learning potentials: Application to dislocations and cracks in iron

L Zhang, G Csányi, E van der Giessen, F Maresca - Acta Materialia, 2024 - Elsevier
Abstract Machine learning interatomic potentials (ML-IAPs) enable quantum-accurate,
classical molecular dynamics simulations of large systems, beyond reach of density …

Vacancy-induced phonon localization in boron arsenide using a unified neural network interatomic potential

J Zhang, H Zhang, J Wu, X Qian, B Song, CT Lin… - Cell Reports Physical …, 2024 - cell.com
Boron arsenide, considered an ideal semiconductor, inevitably introduces arsenic defects
during crystal growth. Here, we develop a unified neural network interatomic potential with …

A tungsten deep neural-network potential for simulating mechanical property degradation under fusion service environment

X Wang, Y Wang, L Zhang, F Dai, H Wang - Nuclear Fusion, 2022 - iopscience.iop.org
Tungsten is a promising candidate material in fusion energy facilities. Molecular dynamics
(MD) simulations reveal the atomistic scale mechanisms, so they are crucial for the …

Multiscale machine-learning interatomic potentials for ferromagnetic and liquid iron

J Byggmästar, G Nikoulis, A Fellman… - Journal of Physics …, 2022 - iopscience.iop.org
A large and increasing number of different types of interatomic potentials exist, either based
on parametrised analytical functions or machine learning. The choice of potential to be used …

Prediction of stable Li-Sn compounds: boosting ab initio searches with neural network potentials

S Kharabadze, A Thorn, EA Koulakova… - npj Computational …, 2022 - nature.com
Abstract The Li-Sn binary system has been the focus of extensive research because it
features Li-rich alloys with potential applications as battery anodes. Our present re …