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- W4282944701 abstract "Electrical resistivity measurements of Fe-10wt%Ni-10wt%Si have been performed in a multi-anvil press from 3 to 20 GPa up to 2200 K. The temperature and pressure dependences of electrical resistivity are analyzed in term of changes in the electron mean free path. Similarities in the thermal properties of Fe-Si and Fe-Ni-Si alloys suggest the effect of Ni is negligible. Electrical resistivity is used to calculate thermal conductivity via the Wiedemann-Franz law, which is then used to estimate the adiabatic heat flow. The adiabatic heat flow at the top of Earth's core is estimated to be 14 TW from the pressure and temperature dependences of thermal conductivity in the liquid state from this study, suggesting thermal convection may still be an active source to power the dynamo depending on the estimated value taken for the heat flow through the core mantle boundary. The calculated adiabatic heat flux density of 22.7-32.1 mW/m2 at the top of Mercury's core suggests a chemically driven magnetic field from 0.02 to 0.21 Gyr after formation. A thermal conductivity of 140-148 Wm-1 K-1 is estimated at the center of a Fe-10wt%Ni-10wt%Si Venusian core, suggesting the presence of a solid inner core and an outer core that is at least partially liquid." @default.
- W4282944701 created "2022-06-16" @default.
- W4282944701 creator A5005181639 @default.
- W4282944701 creator A5051048207 @default.
- W4282944701 date "2022-06-15" @default.
- W4282944701 modified "2023-10-06" @default.
- W4282944701 title "Resistivity of solid and liquid Fe–Ni–Si with applications to the cores of Earth, Mercury and Venus" @default.
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- W4282944701 doi "https://doi.org/10.1038/s41598-022-14130-z" @default.
- W4282944701 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35705611" @default.
- W4282944701 hasPublicationYear "2022" @default.