Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth's Core Thermodynamic Conditions

Elissaios Stavrou*, Yansun Yao, Alexander F. Goncharov, Sergey S. Lobanov, Joseph M. Zaug, Hanyu Liu, Eran Greenberg, Vitali B. Prakapenka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Using in situ synchrotron x-ray diffraction and Raman spectroscopy in concert with first principles calculations we demonstrate the synthesis of stable Xe(Fe,Fe/Ni)3 and XeNi3 compounds at thermodynamic conditions representative of Earth's core. Surprisingly, in the case of both the Xe-Fe and Xe-Ni systems Fe and Ni become highly electronegative and can act as oxidants. The results indicate the changing chemical properties of elements under extreme conditions by documenting that electropositive at ambient pressure elements could gain electrons and form anions.

Original languageEnglish
Article number096001
JournalPhysical Review Letters
Volume120
Issue number9
DOIs
StatePublished - 28 Feb 2018
Externally publishedYes

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