Does the embedded atom model have predictive power?
Creators
- 1. National University of Science and Technology MISIS, Leninskii prosp. 4, 119049 Moscow (Russian Federation)
Description
Potassium, rubidium, aluminum, iron, nickel, and tin embedded atom models (EAMs) have been used as examples to ascertain how well the properties of a metal are described by EAM potentials calculated from the shape of shock adiabats and/or static compression data (from a function of cold pressure). Verification of the EAM potential implies an evaluation of its predictive power and an analysis of the agreement with experiment both at 0 or 298 K and under shock compression. To obtain consistent results, all contributions of collectivized electrons to energy and pressure need to be taken into consideration, especially in transition metals. Taking account of or ignoring electron contributions has little effect on the calculated melting lines of the models, self-diffusion coefficients, and viscosity. The shape of the melting line is sensitive to the behavior of the repulsive branch of the pair contribution to the EAM potential at small distances. (reviews of topical problems)
Availability note (English)
Available from http://dx.doi.org/10.3367/UFNe.2020.01.038761Additional details
Identifiers
Publishing Information
- Journal Title
- Physics Uspekhi
- Journal Volume
- 63
- Journal Issue
- 12
- Journal Page Range
- p. 1161-1187
- ISSN
- 1063-7869
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 53035459
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ALUMINIUM; COMPRESSION; ELECTRONS; EVALUATION; IRON; MELTING; NICKEL; POTASSIUM; POTENTIALS; RUBIDIUM; SELF-DIFFUSION; TEMPERATURE RANGE 0273-0400 K; VISCOSITY
- Descriptors DEC
- ALKALI METALS; DIFFUSION; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; LEPTONS; METALS; PHASE TRANSFORMATIONS; TEMPERATURE RANGE; TRANSITION ELEMENTS