Abstract
The electrical resistivity of compound forming Bi-Te system in the liquid state was studied by the dc-four probe method. Anomalous behavior around the intermetallic compound Bi2Te3, which was reported in the previous study, was not found. In the present study, anomalous behaviors of the temperature coefficient of the electrical resistivity were found at both two eutectic compositions present in this system. These behaviors were discussed based on the effective medium theory of electrical conduction. It is concluded that the concentration fluctuation at the eutectic composition(90 at%Te) grows in the homogeneous liquid phase with the approach to the eutectic temperature.
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