Atomistic simulations of ½<110> screw ...
Type de document :
Article dans une revue scientifique: Article original
URL permanente :
Titre :
Atomistic simulations of ½<110> screw dislocation core in magnesium oxide
Auteur(s) :
Carrez, Philippe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Godet, Julien [Auteur]
Institut Pprime [UPR 3346] [PPrime [Poitiers]]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Godet, Julien [Auteur]
Institut Pprime [UPR 3346] [PPrime [Poitiers]]
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Titre de la revue :
Computational Materials Science
Numéro :
103
Pagination :
250-255
Date de publication :
2015
Mot(s)-clé(s) en anglais :
Dislocation
Core spreading
Core energy
High pressure
Core spreading
Core energy
High pressure
Discipline(s) HAL :
Planète et Univers [physics]/Sciences de la Terre
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Résumé en anglais : [en]
Atomistic calculations of the ½〈1 1 0〉 screw dislocation core structure in MgO have been carried out showing the influence of high pressure (up to 100 GPa) on the core spreading. Calculations rely on a periodic arrangement ...
Lire la suite >Atomistic calculations of the ½〈1 1 0〉 screw dislocation core structure in MgO have been carried out showing the influence of high pressure (up to 100 GPa) on the core spreading. Calculations rely on a periodic arrangement of dislocation quadrupoles. Comparison between first principles and pairwise potential simulations show a remarkable agreement. Our results confirm that the dislocation core evolves from a spreading in {1 1 0} (at low pressure) to a narrower configuration spread in {1 0 0} as pressure increases. The periodic dipole method enables us also to record the pressure induced core energy variations.Lire moins >
Lire la suite >Atomistic calculations of the ½〈1 1 0〉 screw dislocation core structure in MgO have been carried out showing the influence of high pressure (up to 100 GPa) on the core spreading. Calculations rely on a periodic arrangement of dislocation quadrupoles. Comparison between first principles and pairwise potential simulations show a remarkable agreement. Our results confirm that the dislocation core evolves from a spreading in {1 1 0} (at low pressure) to a narrower configuration spread in {1 0 0} as pressure increases. The periodic dipole method enables us also to record the pressure induced core energy variations.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Projet Européen :
Établissement(s) :
Université de Lille
ENSCL
CNRS
INRA
ENSCL
CNRS
INRA
Collections :
Équipe(s) de recherche :
Plasticité
Date de dépôt :
2019-05-16T16:45:20Z
2020-04-16T15:03:47Z
2020-04-16T15:03:47Z
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