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Dynamical and elastic properties of MgSiO3 perovskite (bridgmanite)

Published inGeophysical research letters, vol. 43
Publication date2016
Abstract

We report on the lattice dynamics of MgSiO3 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.

Keywords
  • Lattice dynamics
  • MgSiO3
  • Perovskite
  • Bridgmanite
  • Elasticity
  • Phonons
Research groups
Citation (ISO format)
WEHINGER, Björn et al. Dynamical and elastic properties of MgSiO3 perovskite (bridgmanite). In: Geophysical research letters, 2016, vol. 43. doi: 10.1002/2016GL067970
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Article (Accepted version)
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Identifiers
Journal ISSN0094-8276
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Technical informations

Creation03/31/2016 5:01:00 PM
First validation03/31/2016 5:01:00 PM
Update time03/15/2023 12:14:34 AM
Status update03/15/2023 12:14:34 AM
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