Title :

Amorphous silicate nanoparticles with controlled Fe-Mg pyroxene compositions

Author(s) :

Thompson, Stephen P. [Auteur]
DIAMOND Light source
Demyk, Karine [Auteur]
Institut de recherche en astrophysique et planétologie [IRAP]
Day, Sarah J. [Auteur]
DIAMOND Light source
Evans, Aneurin [Auteur]
Keele University [Keele]
Leroux, Hugues [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Depecker, Christophe [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Parker, Julia E. [Auteur]
DIAMOND Light source
Connor, Leigh [Auteur]
DIAMOND Light source
Wilhelm, Heribert [Auteur]
DIAMOND Light source
Cibin, Giannantonio [Auteur]
DIAMOND Light source

Journal title :

Journal of Non-Crystalline Solids

Volume number :

447

Pages :

255-261

Publication date :

2016

HAL domain(s) :

Planète et Univers [physics]/Astrophysique [astro-ph]
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Sciences de la Terre
Chimie/Matériaux
Physique [physics]/Physique [physics]/Géophysique [physics.geo-ph]

English abstract : [en]

The production of amorphous pyroxene nanoparticles (~ 20 nm) with controlled Fe-Mg content is described. Homogenous particle compositions closely matching required target stoichiometries are obtained by drying a precursor ...
Show more >The production of amorphous pyroxene nanoparticles (~ 20 nm) with controlled Fe-Mg content is described. Homogenous particle compositions closely matching required target stoichiometries are obtained by drying a precursor gel under high vacuum conditions. The silicate nature of the particles is characterised using TEM, synchrotron radiation and FTIR. No oxide phase separation occurs, even at high Fe concentration. Structural domains exist within the nanoparticles that are typically ten times smaller than the physical particle size consistent with either a core-shell, or, random network with multiple embedded domains, particle structure. Thermal annealing below the crystallisation temperature allows the ordered domain size to be further reduced by a factor of ~ 2.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Matériaux Terrestres et Planétaires

Submission date :

2019-05-16T17:19:33Z
2021-02-11T10:04:28Z