[SIT21-P20] Electrical resistivity of hcp Fe-Si alloys at high pressure and temperature
Keywords:Electrical conductivity, Thermal conductivity, Earth's core
In this study, we examined electrical resistivity (the reciprocal of electrical conductivity) of Fe-2, 4 and 6.5 wt.%Si at high P-T conditions in an internally-heated diamond anvil cell (IHDAC) up to 99 GPa and 2910 K. Our results of electrical resistivity of hcp Fe-Si alloys showed its nonlinear temperature dependence, indicating the occurrence of the resistivity saturation. The resistivity saturation in Fe-Si alloys observed in this study supports the notion of high core conductivity and resulting molten lowermost mantle and young inner core.
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