Email this article Synthesis of New Polytypic Modifications of Fe7C3 at 5.5 GPa
- Authors: Chepurov A.I.1, Gromilov S.A.2,3, Sonin V.M.1, Zhimulev E.I.1, Sukhikh A.S.2,3, Chepurov A.A.1, Sobolev N.V.1,3
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Affiliations:
- Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences
- Novosibirsk National Research State University
- Issue: Vol 487, No 2 (2019)
- Pages: 957-959
- Section: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/195359
- DOI: https://doi.org/10.1134/S1028334X19080191
- ID: 195359
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Abstract
The results of experimental synthesis of carbide Fe7C3 at 5.5 GPa are presented. It is found that carbide Fe3C and several polytypes of carbide Fe7C3 are formed along with diamond during cooling of the system. It is considered that the Fe7C3 phase is a component of the Earth’s inner core. Our results indicate that polytypic carbide modifications could have been formed under natural conditions at relatively low pressures during differentiation of the Earth.
About the authors
A. I. Chepurov
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Author for correspondence.
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
S. A. Gromilov
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
V. M. Sonin
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
E. I. Zhimulev
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
A. S. Sukhikh
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
A. A. Chepurov
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090
N. V. Sobolev
Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University
Email: chepurov@igm.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090
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