Anhydrous Phase B: Transmission Electron Microscope Characterization and Elastic Properties

Autor: Addad, A., Carrez, P., Cordier, P., Jacob, D., Karato, S.‐I., Mohiuddin, A., Mussi, A., Nzogang, B. C., Roussel, P., Tommasi, A.
Přispěvatelé: Unité Matériaux et Transformations - UMR 8207 (UMET), Institut de Chimie du CNRS (INC)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Department of Geology and Geophysics [New Haven], Yale University [New Haven], Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Géosciences Montpellier, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Region Hauts-de-FranceRegion Ile-de-France European Union (EU)Centre National de la Recherche Scientifique (CNRS), European Project: 787198,ERC-2017-ADG,TimeMan(2019), Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Institut National de la Recherche Agronomique (INRA), Unité de Catalyse et de Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, CNRS, INRA, ENSCL, Unité Matériaux et Transformations - UMR 8207 [UMET], Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS], Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Université des Antilles (UA)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
anhydrous phase B
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph]
[CHIM.INOR]Chemical Sciences/Inorganic chemistry
Earth's Interior: Composition and State
transmission electron microscopy
Continental Margins: Divergent
Geodesy and Gravity
Instruments and Techniques
High‐pressure Behavior
Seismology
Research Articles
ComputingMilieux_MISCELLANEOUS
Mineralogy and Petrology
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Mineral and Crystal Chemistry
[CHIM.MATE]Chemical Sciences/Material chemistry
Mineral Physics
Geochemistry
Tectonophysics
Experimental Mineralogy and Petrology
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Core
Mantle
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Research Article
Zdroj: European Geosciences Union Congress (EGU2019)
European Geosciences Union Congress (EGU2019), Apr 2019, Vienne, Austria
Geochemistry, Geophysics, Geosystems
Geochemistry, Geophysics, Geosystems, 2019, 20 (8), pp.4059-4072. ⟨10.1029/2019gc008429⟩
Geochemistry, Geophysics, Geosystems : G(3)
EGU General Assembly 2019
EGU General Assembly 2019, Apr 2019, Vienne, Austria
Geochemistry, Geophysics, Geosystems, AGU and the Geochemical Society, 2019, 20 (8), pp.4059-4072. ⟨10.1029/2019gc008429⟩
ISSN: 1525-2027
DOI: 10.1029/2019gc008429⟩
Popis: Anhydrous phase B and stishovite formed directly from olivine in experiments at 14 GPa and 1400 °CThe structure of anhydrous phase B is determined ab initio from precession electron diffraction tomography in transmission electron microscopyElastic and seismic properties of anhydrous phase B are calculated.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.Anhydrous phase B (Anh‐B) is a dense magnesium silicate with composition (Mg, Fe)
Databáze: OpenAIRE
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