Second- and third-order elastic moduli of Co I

Autor:	Yu. M. Gufan, O. V. Kukin, A. Yu. Gufan
Rok vydání:	2014
Předmět:	Physics Third order Classical mechanics Rigidity (electromagnetism) Structural stability Hadron General Physics and Astronomy Thermodynamics Total energy Elastic modulus Moduli
Zdroj:	Bulletin of the Russian Academy of Sciences: Physics. 78:311-316
ISSN:	1934-9432 1062-8738
DOI:	10.3103/s1062873814040133
Popis:	Elastic moduli of Co with A1-type structure are calculated using models in which the total energy is presented in the form of the energy of clusters consisting of pairs, triplets, and quadruplets of identical atoms. The irreducible energies of the clusters are assumed to contain two terms: E ∝ −τ−6, corresponding to the mutual attraction of the particles, and E ∝ −τ−6, corresponding to their mutual repulsion. Here, τ stands for the half-edge of an elementary cell. All 27 types of models expected in accordance with symmetry theory are analyzed. Of these, the 13 that yielded elastic modulus values satisfying the structural stability criteria are selected. The potentials of the selected models are used to predict the rigidity moduli of Co films with an A2-type structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0154413c4c8eaaacdf6ab8ccacc416fd https://doi.org/10.3103/s1062873814040133 Zobrazit plný text záznamu Full text from SpringerLink