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Volume 33 Issue 5
Sep 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(5): 051201.
LIU Changcai, HU Haiying, DAI Lidong, SUN Wenqing. Experimental Study on the Effect of Pressure on the Electrical Conductivity of Pure and Iron Sulfide-Bearing Olivine[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 051201. doi: 10.11858/gywlxb.20180674
Citation: LIU Changcai, HU Haiying, DAI Lidong, SUN Wenqing. Experimental Study on the Effect of Pressure on the Electrical Conductivity of Pure and Iron Sulfide-Bearing Olivine[J]. Chinese Journal of High Pressure Physics, 2019, 33(5): 051201. doi: 10.11858/gywlxb.20180674
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Experimental Study on the Effect of Pressure on the Electrical Conductivity of Pure and Iron Sulfide-Bearing Olivine

doi: 10.11858/gywlxb.20180674
  • 1.

    Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China

  • 2.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • Received Date: 05 Nov 2018
  • Rev Recd Date: 09 Jan 2019
    Abstract
  • We performed in situ electrical conductivity measurements on pure and iron FeS-bearing olivine in a multi–anvil apparatus using the impedance spectroscopy technique under the condition of 1–3 GPa and 723–1273 K. The experimental results indicated that the electrical conductivities of 15% (mass fraction) FeS–bearing olivine, in the range of 0.1–10 S/m, are 2 to 3 orders of magnitude higher than that of pure olivine in the experimental temperature range. The electrical conductivities of pure and 15% FeS-bearing olivine increase with increasing temperature. The dependence of the electrical conductivity of pure olivine on temperature is much stronger. The effect of pressure on the electrical conductivity of pure and iron FeS-bearing olivine is different. With the rise of pressure, the electrical conductivity of pure olivine slightly decreases, whereas the electrical conductivity of the 15% FeS-bearing olivine increases significantly. Based on the experimental results including the Arrhenius parameters, it is proposed that the 15% FeS can form an interconnected network in olivine, which dominates the conduction process of olivine.

     

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