× Notice! This site is currently being redesigned. Please let us know any feedback on the new design or if you find something incorrect/not working.
× Cool! Click on a potential's identifier for computed properties.
 
Citation: A. Agrawal, R. Mishra, L. Ward, K.M. Flores, and W. Windl (2013), "An embedded atom method potential of beryllium", Modelling and Simulation in Materials Science and Engineering, 21(8), 85001. DOI: 10.1088/0965-0393/21/8/085001.
Abstract: We present an embedded atom method (EAM) potential for hexagonal beryllium, with a pair function in the form of a Morse potential and a Johnson embedding function with exponential electron density. The cohesive energy, elastic constants, lattice parameters and relaxed vacancy formation energy were used to fit the potential. The fitted-potential was validated by a comparison to first-principles and, wherever available, experimental results for the lattice energies of various crystal structures: vacancy cluster, interstitial formation and surface. Using a large cutoff distance of 5 Å, which includes interactions to approximately the eighth neighbor shell of beryllium, allows our potential to reproduce these quantities considerably better than previous EAM potentials. The accuracy obtained by our potential is similar to or in some cases even better than available modified EAM potentials, while being computationally less intensive.

Notes: There is a corrigendum for the publication located here.

LAMMPS pair_style eam/alloy (2013--Agrawal-A--Be--LAMMPS--ipr1)
Notes: These files were sent by A. Agrawal (Washington University in St. Louis) on 29 August 2016 and posted with her permission.
File(s):
 
Citation: J. Byggmästar, E.A. Hodille, Y. Ferro, and K. Nordlund (2018), "Analytical bond order potential for simulations of BeO 1D and 2D nanostructures and plasma-surface interactions", Journal of Physics: Condensed Matter, 30(13), 135001. DOI: 10.1088/1361-648x/aaafb3.
Abstract: An analytical interatomic bond order potential for the Be–O system is presented. The potential is fitted and compared to a large database of bulk BeO and point defect properties obtained using density functional theory. Its main applications include simulations of plasma-surface interactions involving oxygen or oxide layers on beryllium, as well as simulations of BeO nanotubes and nanosheets. We apply the potential in a study of oxygen irradiation of Be surfaces, and observe the early stages of an oxide layer forming on the Be surface. Predicted thermal and elastic properties of BeO nanotubes and nanosheets are simulated and compared with published ab initio data.

Notes: J. Byggmästar (University of Helsinki) noted that the pure elemental potentials for Be-Be and O-O are from the following references:
Be-Be: Björkas, C., Juslin, N., Timko, H., Vörtler, K., Nordlund, K., Henriksson, K., & Erhart, P. (2009). Interatomic potentials for the Be–C–H system. Journal of Physics: Condensed Matter, 21(44), 445002. DOI: 10.1088/0953-8984/21/44/445002
O-O: Erhart, P., Juslin, N., Goy, O., Nordlund, K., Müller, R., & Albe, K. (2006). Analytic bond-order potential for atomistic simulations of zinc oxide. Journal of Physics: Condensed Matter, 18(29), 6585–6605. DOI: https://doi.org/10.1088/0953-8984/18/29/003
which should be cited if only the Be-Be or O-O parts are used.

LAMMPS pair_style tersoff/zbl (2018--Byggmastar-J--Be-O--LAMMPS--ipr1)
Notes: These files were sent by J. Byggmästar (University of Helsinki) on 6 Mar. 2018 and posted with his permission.
File(s):
Date Created: October 5, 2010 | Last updated: October 02, 2018