× Warning! Note that elemental potentials taken from alloy descriptions may not work well for the pure species. This is particularly true if the elements were fit for compounds instead of being optimized separately. As with all interatomic potentials, please check to make sure that the performance is adequate for your problem.

× Updated! Potentials that share interactions are now listed as related models.

2014--Fernandez-J-R-Pascuet-M-I--U

Citation: J.R. Fernández, and M.I. Pascuet (2014), "On the accurate description of uranium metallic phases: a MEAM interatomic potential approach", Modelling and Simulation in Materials Science and Engineering, 22(5), 055019. DOI: 10.1088/0965-0393/22/5/055019.

Abstract: A new interatomic potential in the framework of the modified embedded atom method (MEAM) to model U metal is presented. The potential acceptably reproduces the lattice parameters and cohesive energy of the orthorhombic αU. The relative stability of the experimentally observed phase at low temperatures with respect to several other structures (bct, bcc, simple cubic, tetragonal β Np, fcc and hcp) is also taken into account. Intrinsic point defect properties compare reasonably well with data from the literature. To determine the quality of the interaction, the potential is used to study a number of properties for the pure metal at finite temperatures and the results are compared with the available data. The obtained allotropic αU ↔ γU transformation and melting temperatures are in good agreement with experimental values. Based on the simulations, a new αU ↔ γU transformation mechanism is proposed.

LAMMPS pair_style meam (2014--Fernandez-J-R--U--LAMMPS--ipr1)

See Computed Properties
Notes: These files were sent by M.I. Pascuet (CONICET) on 25 Apr. 2016 and posted with her permission.
File(s):

U.meam
library-U.meam