Abstract
We have measured the compressibility of CsCl-structured FeSi to 40 GPa by X-ray powder diffraction using synchrotron radiation. A third order Birch-Murnaghan equation of state fit to the experimental data yields Vo = 21.74 ± 0.02 Å, with a Ko of 184 ± 5 GPa and K1o = 4.2 ± 0.3. The measured density and elastic properties of CsCl-FeSi are consistent with silicon being a major element in the Earth's core.
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CITATION STYLE
Dobson, D. P., Crichton, W. A., Bouvier, P., Vočadlo, L., & Wood, I. G. (2003). The equation of state of CsCl-structured FeSi to 40 GPa: Implications for silicon in the Earth’s core. Geophysical Research Letters, 30(1), 14-1-14–4. https://doi.org/10.1029/2002gl016228
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