Dynamical and elastic properties of MgSiO 3 perovskite (bridgmanite)
| Autor: | Samrath L. Chaplot, Michael Krisch, Björn Wehinger, Alessandro Mirone, Ranjan Mittal, Eiji Ohtani, Saxena Surendra, Subrata Ghose, Sabrina Nazzareni, Daniele Antonangeli, Anton Shatskiy, Alexei Bosak |
|---|---|
| Přispěvatelé: | Department of Quantum Matter Physics [Geneva] (DQMP), Université de Genève = University of Geneva (UNIGE), Laboratory for Neutron Scattering and Imaging [Paul Scherrer Institute] (LNS), Paul Scherrer Institute (PSI), European Synchrotron Radiation Facility (ESRF), Department of Physics and Geology [Perugia], Università degli Studi di Perugia = University of Perugia (UNIPG), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de recherche pour le développement [IRD] : UR206-Centre National de la Recherche Scientifique (CNRS), Solid State Physics Division (BHARC), Bhabha Atomic Research Centre (BARC), Government of India, Department of Atomic Energy-Government of India, Department of Atomic Energy, Department of Earth Science [Sendai], Tohoku University [Sendai], Sobolev Institute of Geology and Mineralogy [Novosibirsk], Siberian Branch of the Russian Academy of Sciences (SB RAS), Department of Geology and Geophysics [Novosibirsk], Novosibirsk State University (NSU), Center for the Study of Matter at Extreme Conditions, Florida International University [Miami] (FIU), Department of Earth and Space Sciences [Seattle], University of Washington [Seattle], University of Geneva [Switzerland], Università degli Studi di Perugia (UNIPG) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Work (thermodynamics)
Materials science Phonon [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Silicate perovskite bridgmanite elasticity lattice dynamics MgSiO3 perovskite phonons Earth and Planetary Sciences (all) Geophysics Bridgmanite ddc:500.2 010502 geochemistry & geophysics Perovskite 01 natural sciences Settore FIS/03 - Fisica della Materia Condensed Matter::Materials Science Ab initio quantum chemistry methods Dispersion relation 0103 physical sciences 010306 general physics 0105 earth and related environmental sciences Perovskite (structure) MgSiO 3 Condensed matter physics Scattering Lattice dynamics Elasticity General Earth and Planetary Sciences Phonons Earth (classical element) |
| Zdroj: | Geophysical Research Letters Geophysical Research Letters, 2016, 43 (6), pp.2568-2575. ⟨10.1002/2016GL067970⟩ Geophysical Research Letters, American Geophysical Union, 2016, 43 (6), pp.2568-2575. ⟨10.1002/2016GL067970⟩ Geophysical Research Letters, Vol. 43 (2016) |
| ISSN: | 0094-8276 1944-8007 |
| DOI: | 10.1002/2016GL067970⟩ |
| Popis: | International audience; We report on the lattice dynamics of MgSiO 3 perovskite (bridgmanite). Phonon spectroscopy was performed employing inelastic X-ray scattering from single crystals, and the results were confronted to ab initio calculations. We observe a remarkable agreement between experiment and theory, and provide accurate results for phonon dispersion relations, the vibrational density of states, and the full elasticity tensor. The present work constitutes an important milestone fully validating the lattice dynamics calculation against precise experimental evidence and marks a starting point to extend this kind of combined studies to the high-pressure and high-temperature conditions directly relevant for the physical properties and chemical composition of Earth's lower mantle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text