@article{fee58bd0969041058c5e2cf8126a8385,
title = "Melting relations in the Fe–S–Si system at high pressure and temperature: Implications for the planetary core",
abstract = " 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 Fe 3 S 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.",
keywords = "Diamond anvil cell, Fe-S-Si system, Melting relations, Planetary core",
author = "Takanori Sakairi and Eiji Ohtani and Seiji Kamada and Takeshi Sakai and Tatsuya Sakamaki and Naohisa Hirao",
note = "Funding Information: T.S. was supported by a research fellowship from Japan Society for the Promotion of Science (JSPS). This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Science, Sport and Technology of the Japanese Government (no. 22000002). EO was partly supported by a grant from the Ministry of Education and Science of the Russian Federation, project 14.B25.31.0032. Funding Information: We thank Y. Ohishi for support with the X-ray diffraction measurements at BL10XU beamline, SPring-8. T.S. gratefully acknowledges the Japan Society for the Promotion of Science (JSPS) for providing a research fellowship. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Science, Sports and Technology of the Japanese Government (no. 15H05748) awarded to E.O. This work was partly supported by a grant from the Ministry of Education and Science of the Russian Federation, project 14.B25.31.0032, also awarded to E.O. The X-ray diffraction experiments were performed under contract at SPring-8 (proposal numbers 2013A1496, 2013B0104, 2014A0104, and 2014B014). Funding T.S. was supported by a research fellowship from Japan Society for the Promotion of Science (JSPS). This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Science, Sport and Technology of the Japanese Government (no. 22000002). EO was partly supported by a grant from the Ministry of Education and Science of the Russian Federation, project 14.B25.31.0032. Funding Information: We thank Y. Ohishi for support with the X-ray diffraction measurements at BL10XU beamline, SPring-8. T.S. gratefully acknowledges the Japan Society for the Promotion of Science (JSPS) for providing a research fellowship. This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Science, Sports and Technology of the Japanese Government (no. 15H05748) awarded to E.O. This work was partly supported by a grant from the Ministry of Education and Science of the Russian Federation, project 14.B25.31.0032, also awarded to E.O. The X-ray diffraction experiments were performed under contract at SPring-8 (proposal numbers 2013A1496, 2013B0104, 2014A0104, and 2014B014). Publisher Copyright: {\textcopyright} The Author(s). 2017.",
year = "2017",
doi = "10.1186/s40645-017-0125-x",
language = "English",
volume = "4",
journal = "Progress in Earth and Planetary Science",
issn = "2197-4284",
publisher = "SpringerOpen",
number = "1",
}