Title :

Anhydrous Phase B: Transmission Electron Microscope Characterization and Elastic Properties

Author(s) :

Addad, Ahmed [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Carrez, Philippe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Cordier, Patrick [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Jacob, Damien [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Karato, S.‐I. [Auteur]
Mohiuddin, A. [Auteur]
Mussi, Alexandre [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
NZOGANG, Billy Clitton [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Roussel, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Tommasi, A. [Auteur]

Journal title :

Geochemistry, Geophysics, Geosystems

Abbreviated title :

Geochem. Geophys. Geosyst.

Volume number :

20

Pages :

4059-4072

Publisher :

American Geophysical Union (AGU)

Publication date :

2019-08

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Chimie/Matériaux

English abstract : [en]

We have performed an extensive characterization by transmission electron microscopy (including precession electron diffraction tomography and ab initio electron diffraction refinement as well as electron energy loss ...
Show more >We have performed an extensive characterization by transmission electron microscopy (including precession electron diffraction tomography and ab initio electron diffraction refinement as well as electron energy loss spectroscopy) of anhydrous phase B (Anh‐B) formed directly from olivine at 14 GPa, 1400 °C. We show that Anh‐B, which can be considered as a superstructure of olivine, exhibits strong topotactic relationships with it. This lowers the interfacial energy between the two phases and the energy barrier for nucleation of Anh‐B, which can form as a metastable phase. We have calculated the elastic and seismic properties of Anh‐B. From the elastic point of view, Anh‐B appears to be more isotropic than olivine. Anh‐B displays only a moderate seismic anisotropy quite similar to the one of wadsleyite.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Non spécifiée

European Project :

Rheology of Earth materials: closing the gap between TIMEscales in the laboratory and in the MANtle

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Plasticité
Matériaux Terrestres et Planétaires
Matériaux inorganiques, structures, systèmes et propriétés (MISSP)

Submission date :

2019-10-02T16:41:14Z
2019-10-10T08:13:02Z