PHYSICAL PROPERTIES OF LIQUID FE ALLOYS AT HIGH PRESSURE AND THEIR BEARINGS ON THE NATURE OF METALLIC PLANETARY CORES
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dc.contributor.author | Sanloup C. | |
dc.contributor.author | Gillet P. | |
dc.contributor.author | Guyot F. | |
dc.contributor.author | Fei Y. | |
dc.date.accessioned | 2021-05-21T07:34:19Z | |
dc.date.available | 2021-05-21T07:34:19Z | |
dc.date.issued | 2002 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=42267378 | |
dc.identifier.citation | Journal of Geophysical Research: Solid Earth, 2002, 107, 11, ECV 4-1-4-9 | |
dc.identifier.issn | 2169-9356 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/28472 | |
dc.description.abstract | Sulfur and silicon are among the expected alloying light elements in planetary liquid iron cores. Structural properties of Fe-27 wt % S and Fe-17 wt % Si liquid alloys at high pressure and high temperature (0-5 GPa/1400-2300 K) are measured by synchrotron X-ray diffraction. Sulfur strongly modifies the local structure of liquid iron whereas silicon has only small structural effects. Fe-27 wt % S melts are indeed poorly ordered which explains a higher compressibility compared to pure liquid Fe. These results point out the necessity to consider the strong effect of S on liquid Fe properties while modeling planetary interiors. They imply a low S content in the Earth's outer core, leaving Si as a strong candidate, and argue for a present-day Martian solid core when combined with previous global chemical models. | |
dc.subject | core | |
dc.subject | liquid | |
dc.subject | iron | |
dc.subject | X-rays | |
dc.subject | Mars | |
dc.subject | Ganymede | |
dc.title | PHYSICAL PROPERTIES OF LIQUID FE ALLOYS AT HIGH PRESSURE AND THEIR BEARINGS ON THE NATURE OF METALLIC PLANETARY CORES | |
dc.type | Статья |
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