| Cite this article as: Wu Shao-Bai,Zhou Liang-Liang,Liu Xun,Huang Hai-Jun. Sound Velocities and Densities of Liquid Fe-8.6 wt% Si under high pressure and temperature: Implications for a Si-rich Core [J]. J. At. Mol. Phys.(原子与分子物理学报), 2024, 41: 064001 (in Chinese) |
| Sound Velocities and Densities of Liquid Fe-8.6 wt% Si under high pressure and temperature: Implications for a Si-rich Core |
| Hits 101 Download times 36 Received:April 10, 2023 Revised:April 20, 2023 |
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| Key Words
Fe-Si Sound velocity High temperature and pressure, Earth’s core |
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| Abstract
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| Based on previous studies, we established a thermodynamic model to calculate the equation of state (EOS) and longitudinal sound velocity (VP) for liquid Fe and Fe-8.6Si under high temperature and pressure. The calculated EOSs and VP are consistent with measurements by static and dynamic compressions. Under the outer core conditions, EOS and VP of liquid Fe-8.6Si simultaneously match the seismic data of the Earth’s outer core. If Si is the only light element, its maximum concentration in the outer core is estimated to be 7.6~8.6 wt%. |
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