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- Jung-Fu Lin
- Department of the Geophysical Sciences,
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- Dion L. Heinz
- Department of the Geophysical Sciences,
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- Andrew J. Campbell
- Department of the Geophysical Sciences,
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- James M. Devine
- Department of the Geophysical Sciences,
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- Guoyin Shen
- Consortium for Advanced Radiation Sources, University of Chicago, Chicago, IL 60637, USA.
書誌事項
- 公開日
- 2002-01-11
- DOI
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- 10.1126/science.1066932
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:p>We have investigated the phase relations in the iron-rich portion of the iron-silicon (Fe-Si) alloys at high pressures and temperatures. Our study indicates that Si alloyed with Fe can stabilize the body-centered cubic (bcc) phase up to at least 84 gigapascals (compared to ∼10 gigapascals for pure Fe) and 2400 kelvin. Earth's inner core may be composed of hexagonal close-packed (hcp) Fe with up to 4 weight percent Si, but it is also conceivable that the inner core could be a mixture of a Si-rich bcc phase and a Si-poor hcp phase.</jats:p>
収録刊行物
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- Science
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Science 295 (5553), 313-315, 2002-01-11
American Association for the Advancement of Science (AAAS)
