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American Mineralogist

Journal of Earth and Planetary Materials

Ed. by Baker, Don / Xu, Hongwu / Swainson, Ian


IMPACT FACTOR 2018: 2.631

CiteScore 2018: 2.55

SCImago Journal Rank (SJR) 2018: 1.355
Source Normalized Impact per Paper (SNIP) 2018: 1.103

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1945-3027
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Volume 99, Issue 1

Issues

The sound velocity measurements of Fe3S

Seiji Kamada
  • Corresponding author
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
  • Department of Geology, University of Illinois at Urbana-Champaign, 1301 West Green Street, Urbana, Illinois, 61801, U.S.A.
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/ Eiji Ohtani
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
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/ Hiroshi Fukui
  • Materials Dynamics Laboratory, RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo 679-5148, Japan
  • Graduate School of Material Science, University of Hyogo, 3-2-1, Kamigori, Hyogo 678-1279, Japan
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/ Takeshi Sakai
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
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/ Hidenori Terasaki
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
  • Department of Earth and Space Science, Graduate School of Science, Osaka University, Osaka 560-0043, Japan
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/ Suguru Takahashi
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
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/ Yuki Shibazaki
  • Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
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/ Satoshi Tsutsui / Alfred Q.R. Baron
  • Materials Dynamics Laboratory, RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo 679-5148, Japan
  • Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
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/ Naohisa Hirao / Yasuo Ohishi
Published Online: 2014-01-15 | DOI: https://doi.org/10.2138/am.2014.4463

Abstract

We measured the sound velocity of Fe3S at room temperature up to 85 GPa employing inelastic X‑ray scattering to better constrain the constitution of the inner core. The density of Fe3S was also determined by X-ray diffraction under the same conditions. The relation of the P-wave velocity (vP) and density (ρ) of Fe3S follows Birch’s law, vP(m/s) = 1.14(5) × ρ(kg/m3) - 2580(410). Based on Birch’s law determined here for Fe3S and that for ε-Fe reported previously, we found that sulfur decreases both density and compressional velocity of hcp-Fe at the core pressure and 300 K.

Keywords : Fe3S; inner core; sound velocity; Birch’s law; inelastic X-ray scattering

About the article

Published Online: 2014-01-15

Published in Print: 2014-01-01


Citation Information: American Mineralogist, Volume 99, Issue 1, Pages 98–251, ISSN (Online) 1945-3027, ISSN (Print) 0003-004X, DOI: https://doi.org/10.2138/am.2014.4463.

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© 2014 by Walter de Gruyter GmbH & Co..

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