Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1016/j.rgg.2015.01.010

Ключевые слова: iron carbide, Earth's core, first-principles calculations, density, bulk modulus, magnetic moment, equation of state, experimental study, inner core, magnetic field, numerical model, P-T conditions, pressure field

Аннотация: Recent experimental studies have demonstrated that Fe3C is more stable than Fe7C3 under PT-conditions of the Earth's core. Theoretical calculations at 0 K, in turn, show the possible stability of Fe2C at the core pressures. Therefore, a theoretical modeling of iron carbides at 100 GPa, Fe2C loses its magnetic moment. Assuming carbon to be the only light element in the system, the first-principles calculations yield 2.7-2.9 and 2.0-2.2 wt.% C at the boundary of the inner core at 5000 and 7000 K, respectively. (C) 2015, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.

Журнал: RUSSIAN GEOLOGY AND GEOPHYSICS

Выпуск журнала: Vol. 56, Is. 1-2

Номера страниц: 164-171

ISSN журнала: 10687971

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

• Litasov K.D. (Novosibirsk State University)
• Gavryushkin P.N. (Novosibirsk State University)
• Popov Z.I. (L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences)
• Ovchinnikov S.G. (Siberian Federal University)
• Fedorov A.S. (Siberian Federal University)

• Web of Science Core Collection
• Scopus
• Ядро РИНЦ (eLIBRARY.RU)
• Список ВАК