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Journal ArticleDOI

Embedded-atom-method functions for the fcc metals Cu, Ag, Au, Ni, Pd, Pt, and their alloys.

Stephen M. Foiles, +2 more
- 15 Jun 1986 - 
- Vol. 33, Iss: 12, pp 7983-7991
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TLDR
A consistent set of embedding functions and pair interactions for use with the embedded-atom method was determined empirically by fitting to the sublimation energy, equilibrium lattice constant, elastic constants, and vacancy-formation energies of the pure metals and the heats of solution of the binary alloys as discussed by the authors.
Abstract
A consistent set of embedding functions and pair interactions for use with the embedded-atom method [M.S. Daw and M. I. Baskes, Phys. Rev. B 29, 6443 (1984)] have been determined empirically to describe the fcc metals Cu, Ag, Au, Ni, Pd, and Pt as well as alloys containing these metals. The functions are determined empirically by fitting to the sublimation energy, equilibrium lattice constant, elastic constants, and vacancy-formation energies of the pure metals and the heats of solution of the binary alloys. The validity of the functions is tested by computing a wide range of properties: the formation volume and migration energy of vacancies, the formation energy, formation volume, and migration energy of divacancies and self-interstitials, the surface energy and geometries of the low-index surfaces of the pure metals, and the segregation energy of substitutional impurities to (100) surfaces.

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Citations
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Journal ArticleDOI

Computer simulation of phase transitions associated with surface miscibility gaps

TL;DR: In this article, the Embedded Atom Method has been used in conjunction with Monte Carlo modeling to simulate phase transitions associated with surface miscibility gaps in dilute Cu-Ag alloys.
Journal ArticleDOI

Second-moment interatomic potential for Al, Ni and Ni-Al alloys, and molecular dynamics application

TL;DR: In this article, the authors presented an interatomic potential for Al, Ni and Ni-Al ordered alloys within the second-moment approximation of the tight-binding theory by fitting to the total energy of these materials computed by first-principles augmented-plane-wave calculations as a function of the volume.
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Silicon potentials investigated using density functional theory fitted neural networks

TL;DR: The transferability of the neural network potential is demonstrated by fitting to various bulk, surface, and cluster systems by using the Bader analysis scheme to partition the total system energy among the constituent atoms.
Posted Content

Fast, accurate, and transferable many-body interatomic potentials by symbolic regression

TL;DR: In this article, a machine learning algorithm based on symbolic regression in the form of genetic programming is proposed to discover accurate, computationally efficient manybody potential models, which are simple, as fast as embedded atom models and capable of accurately predicting properties outside of their training set.
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Energy cost to sputter an atom from a surface in keV ion bombardment processes

TL;DR: In this article, it was shown that the energy cost to remove one atom from the surface during ion bombardment is larger than the surface binding energy or bulk heat of sublimation.
References
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Journal ArticleDOI

Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals

TL;DR: In this paper, the authors derived an expression for the total energy of a metal using the embedding energy from which they obtained several ground-state properties, such as the lattice constant, elastic constants, sublimation energy, and vacancy-formation energy.
Journal ArticleDOI

Semiempirical, Quantum Mechanical Calculation of Hydrogen Embrittlement in Metals

TL;DR: In this article, a semi-empirical model of metals and impurities (embedded atom method) was proposed to make possible a static treatment of the brittle fracture of a transition metal in the presence of hydrogen.
Journal ArticleDOI

Surface free energies of solid metals: Estimation from liquid surface tension measurements

TL;DR: In this paper, a semi-theoretical approach was proposed to estimate the surface energy of solids in the absence of direct experimental measurement. But this method was not suitable for the case of high-index surfaces.
Journal ArticleDOI

Universal features of the equation of state of metals

TL;DR: The zero-temperature equation of state of metals, in the absence of phase transitions, was shown to be accurately predicted from zero-pressure data in this article, and a simple universal relation was found.
Journal ArticleDOI

Calculation of the surface segregation of Ni-Cu alloys with the use of the embedded-atom method

TL;DR: The surface composition of Ni-Cu alloys has been calculated as a function of atomic layer, crystal face, and bulk composition at a temperature of 800 K and the results show that the composition varies nonmonotonically near the surface with the surface layer strongly enriched in Cu while the near-surface layers are enriched in Ni.
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