Dobson, DP;
Crichton, WA;
Bouvier, P;
Vocadlo, L;
Wood, IG;
(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)
, Article 1014. 10.1029/2002GL016228.
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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 V-0=21.74+/-0.02 Angstrom, with a K-0 of 184+/-5 GPa and K'(0)=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.
| Type: | Article |
|---|---|
| Title: | The equation of state of CsCl-structured FeSi to 40 GPa: Implications for silicon in the Earth's core |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2002GL016228 |
| Publisher version: | http://dx.doi.org/10.1029/2002GL016228 |
| Language: | English |
| Additional information: | Copyright 2003 by the American Geophysical Union |
| Keywords: | Neutron powder diffraction, Situ x-ray, High-pressure, Epsilon-fesi, Thermal-expansion, Crystal-structure, Iron, Phase, Compressibility, Calibration |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/155360 |
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