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Title: Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth’s Core Thermodynamic Conditions

In this study, 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 XeNi 3 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. In conclusion, 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [5] ;  [6] ;  [6]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences Directorate
  2. University of Saskatchewan, Saskatoon Saskatchewan (Canada). Department of Physics and Engineering Physics; Canadian Light Source, Saskatoon, Saskatchewan (Canada)
  3. Chinese Academy of Sciences, Hefei (China). Key Laboratory of Materials Physics and Center for Energy Matter in Extreme Environments; Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Laboratory; University of Science and Technology of China, Hefei (China)
  4. Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Laboratory; Sobolev Institute of Geology and Mineralogy, Siberian Branch Russian Academy of Science, Novosibirsk (Russia)
  5. Carnegie Inst. of Washington, Washington, DC (United States). Geophysical Laboratory
  6. Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources
Publication Date:
Report Number(s):
LLNL-JRNL-729319
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1802227
Grant/Contract Number:
AC52-07NA27344; SC0001057; FG02-94ER14466; AC02-05CH11231; AC02-06CH11357; 18-LW-036
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 9; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 58 GEOSCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1426136
Alternate Identifier(s):
OSTI ID: 1423177

Stavrou, Elissaios, Yao, Yansun, Goncharov, Alexander F., Lobanov, Sergey S., Zaug, Joseph M., Liu, Hanyu, Greenberg, Eran, and Prakapenka, Vitali B.. Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth’s Core Thermodynamic Conditions. United States: N. p., Web. doi:10.1103/PhysRevLett.120.096001.
Stavrou, Elissaios, Yao, Yansun, Goncharov, Alexander F., Lobanov, Sergey S., Zaug, Joseph M., Liu, Hanyu, Greenberg, Eran, & Prakapenka, Vitali B.. Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth’s Core Thermodynamic Conditions. United States. doi:10.1103/PhysRevLett.120.096001.
Stavrou, Elissaios, Yao, Yansun, Goncharov, Alexander F., Lobanov, Sergey S., Zaug, Joseph M., Liu, Hanyu, Greenberg, Eran, and Prakapenka, Vitali B.. 2018. "Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth’s Core Thermodynamic Conditions". United States. doi:10.1103/PhysRevLett.120.096001.
@article{osti_1426136,
title = {Synthesis of Xenon and Iron-Nickel Intermetallic Compounds at Earth’s Core Thermodynamic Conditions},
author = {Stavrou, Elissaios and Yao, Yansun and Goncharov, Alexander F. and Lobanov, Sergey S. and Zaug, Joseph M. and Liu, Hanyu and Greenberg, Eran and Prakapenka, Vitali B.},
abstractNote = {In this study, 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. In conclusion, 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.},
doi = {10.1103/PhysRevLett.120.096001},
journal = {Physical Review Letters},
number = 9,
volume = 120,
place = {United States},
year = {2018},
month = {2}
}