Инд. авторы:	Sakairi T., Ohtani E., Kamada S., Sakai T., Sakamaki T., Hirao N.
Заглавие:	Melting relations in the Fe-S-Si system at high pressure and temperature: implications for the planetary core
Библ. ссылка:	Sakairi T., Ohtani E., Kamada S., Sakai T., Sakamaki T., Hirao N. Melting relations in the Fe-S-Si system at high pressure and temperature: implications for the planetary core // Progress in Earth and Planetary Science. - 2017. - Vol.4. - Art.UNSP 10. - ISSN 2197-4284.
Внешние системы:	DOI: 10.1186/s40645-017-0125-x; WoS: 000397979100001;
Реферат:	eng: The phase and melting relations in the Fe-S-Si system were determined up to 60 GPa by using a double-sided laser-heated diamond anvil cell combined with X-ray diffraction. On the basis of the X-ray diffraction patterns, we confirmed that hcp/fcc Fe-Si alloys and Fe3S are stable phases under subsolidus conditions in the Fe-S-Si system. Both solidus and liquidus temperatures are significantly lower than the melting temperature of pure Fe and both increase with pressure. The slopes of the Fe-S-Si liquidus and solidus curves determined here are smaller than the adiabatic temperature gradients of the liquid cores of Mercury and Mars. Thus, crystallization of their cores started at the core-mantle boundary region.
Ключевые слова:	INTERIOR; GPA; PHASE-RELATIONS; GRUNEISEN-PARAMETER; CRYSTALLIZATION REGIME; OUTER CORE; IRON-SULFUR COMPOUND; X-RAY-DIFFRACTION; EARTHS INNER-CORE; Diamond anvil; Fe-S-Si system; Melting relations; Planetary core; MERCURY;
Издано:	2017