Electrical conductivity of molten FeNiSC core mix |
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| Authors: | MJS Johnston RGJ Strens |
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| Institution: | Department of Geophysics and Planetary Physics, School of Physics, The University, Newcastle upon Tyne England |
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| Abstract: | The electrical conductivity of liquid (Fe90Ni10)3S2 saturated with 2.6 weight percent carbon averages 2.7·105 mho/m at 1000°C and zero pressure. This may imply a slightly lower electrical conductivity for the earth's core than that obtained by extrapolating the properties of pure liquid iron and solid iron alloys to core pressures and temperatures. Although a sulphur-rich core would have a smaller proportion of sulphur, the effect of lowering the sulphur content of the FeNiSC liquid to about 15 weight percent would be unlikely to increase the conductivity above 5·105 mho/m. |
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