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

doi:10.1103/PhysRevLett.120.096001

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 journal › Article › peer-review

39 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 language	English
Article number	096001
Journal	Physical Review Letters
Volume	120
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.120.096001
State	Published - 28 Feb 2018
Externally published	Yes

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

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.",

author = "Elissaios Stavrou and Yansun Yao and Goncharov, {Alexander F.} and Lobanov, {Sergey S.} and Zaug, {Joseph M.} and Hanyu Liu and Eran Greenberg and Prakapenka, {Vitali B.}",

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doi = "10.1103/PhysRevLett.120.096001",

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T1 - Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth's Core Thermodynamic Conditions

AU - Stavrou, Elissaios

AU - Yao, Yansun

AU - Goncharov, Alexander F.

AU - Lobanov, Sergey S.

AU - Zaug, Joseph M.

AU - Liu, Hanyu

AU - Greenberg, Eran

AU - Prakapenka, Vitali B.

PY - 2018/2/28

Y1 - 2018/2/28

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevLett.120.096001

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SN - 0031-9007

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

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ER -

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

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