Ultrafast x-ray detection of low-spin iron in molten silicate under deep planetary interior conditions-Reference-Cited by-同舟云学术

Ultrafast x-ray detection of low-spin iron in molten silicate under deep planetary interior conditions

Published:2023-10-20 Issue:42 Volume:9 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Shim Sang-Heon¹^ORCID,Ko Byeongkwan¹,Sokaras Dimosthenis²^ORCID,Nagler Bob²^ORCID,Lee He Ja²^ORCID,Galtier Eric²^ORCID,Glenzer Siegfried²^ORCID,Granados Eduardo²,Vinci Tommaso³^ORCID,Fiquet Guillaume⁴^ORCID,Dolinschi Jonathan¹^ORCID,Tappan Jackie¹,Kulka Britany¹^ORCID,Mao Wendy L.²⁵^ORCID,Morard Guillaume⁴⁶^ORCID,Ravasio Alessandra³^ORCID,Gleason Arianna²⁵^ORCID,Alonso-Mori Roberto²^ORCID

Affiliation:

1. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA.

2. SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA.

3. Laboratoire pour l’Utilisation des Lasers Intenses (LULI), Ecole Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau, France.

4. Sorbonne Université, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, Museum National d’Histoire Naturelle, UMR CNRS 7590, 4 Place Jussieu, 75005 Paris, France.

5. Department of Earth and Planetary Sciences, Stanford University, Stanford CA 94305, USA.

6. Université Grenoble Alpes, Universé Savoie Mont Blanc, CNRS, IRD, Université Gustave Eiffel, ISTerre, 38000 Grenoble, France.

Abstract

The spin state of Fe can alter the key physical properties of silicate melts, affecting the early differentiation and the dynamic stability of the melts in the deep rocky planets. The low-spin state of Fe can increase the affinity of Fe for the melt over the solid phases and the electrical conductivity of melt at high pressures. However, the spin state of Fe has never been measured in dense silicate melts due to experimental challenges. We report detection of dominantly low-spin Fe in dynamically compressed olivine melt at 150 to 256 gigapascals and 3000 to 6000 kelvin using laser-driven shock wave compression combined with femtosecond x-ray diffraction and x-ray emission spectroscopy using an x-ray free electron laser. The observation of dominantly low-spin Fe supports gravitationally stable melt in the deep mantle and generation of a dynamo from the silicate melt portion of rocky planets.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adi6153

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