Electronic and Ionic Conductions in Liquid Cu-Se System.

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  • Itoh Keiji
    Graduate School of Science and Technology, Niigata University, Niigata 950–2102
  • Usuki Takeshi
    Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Yamagata 990–0021
  • Tamaki Shigeru
    Department of Physics, Faculty of Science, Niigata University, Niigata 950–2102

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  • Electronic and Ionic Conductions in Liq

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Abstract

Electronic and ionic conductivities of liquid Cu--Se system have been measured as a function of concentration and temperature. The electronic conductivity, σ e, in the system shows a broad minimum near the composition Cu2Se and the ionic conductivity, σ i, has a maximum around this composition. In Se-rich region, a change from negative to positive temperature dependence of σ e and a discontinuous jump in σ i have been observed at a certain temperature. The relation between the electronic and ionic conductivities have quantitatively been discussed.

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