Title :

Atomic-scale properties of jogs along 1/2〈110〉{1¯10} edge dislocations in MgO

Author(s) :

Zhai, Jian-Hui [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Hirel, Pierre [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Carrez, Philippe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207

Journal title :

Scripta Materialia

Abbreviated title :

Scripta Materialia

Volume number :

181

Pages :

66-69

Publisher :

Elsevier BV

Publication date :

2020-05

ISSN :

1359-6462

HAL domain(s) :

Planète et Univers [physics]/Sciences de la Terre
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

We report atomic-scale simulations of the structure and formation energies of jog pairs on edge dislocations in magnesium oxide (MgO). The atomic configurations of elementary jogs of height and super-jogs of height are ...
Show more >We report atomic-scale simulations of the structure and formation energies of jog pairs on edge dislocations in magnesium oxide (MgO). The atomic configurations of elementary jogs of height and super-jogs of height are fully characterized showing that stable jogs spread in {111}. Besides, our simulations confirm that elementary jogs carry an electric charge ± q/2 where q is the charge of a Mg ion, while super-jogs are charge-neutral. The computation of the formation energy reveals the predominance of charged elementary jogs. This offers new insight into the mechanisms for dislocation climb in MgO.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Plasticité

Submission date :

2020-02-19T16:02:57Z
2020-02-26T12:02:53Z