Electrical Properties of Liquid Si and Liquid Au-Si Alloys

概要

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The electrical resistivity and the thermoelectric power of liquid Au-Si alloys have been measured as a function of temperature. The electrical resistivity increases rapidly with the addition for Si to liquid An, and the composition dependence of the electrical resistivity of liquid Au_1_<-c>Si_c alloys exhibits a maximum at the composition c = 0.4. A negative temperature coefficient of electrical resistivity was confirmed for liquid Si and also found for liquid Au_1_<-c>Si_c alloys with 0.15 ≦ c ≦ 0.8. The composition dependence of the thermoelectric power for liquid Au_1_<-c>Si_c alloys shows a rapid change from a positive value in the Au-rich region to a negative value in the composition range c ≧ 0.15 and reaches a minimum value of -6μV/K at the composition c = 0.8. The electrical resistivity and the thermoelectric power of liquid Au-Si alloys have been estimated by the Faber-Ziman theory. The lower eutectic region in the system will be also studied by using the thermodynamic equation.
社団法人日本物理学会の論文
2003-02-15