An electrodeless method for measuring the electrical conductivities of metallic and semiconductor melts at elevated temperatures is described. The transformer "eddy current" method, which was capable of measuring conductivities from 1 to greater than 10,000 (ohm-cm) -1, was used. The system was calibrated with Hg at 25 ℃ and tested with Hg to 300 ℃ and Bi to 550 ℃. The specific conductivities of various compositions of Bi-Bil3 solutions were measured at 500℃ and compared with those measured by an electrode method. The accuracy of the method decreased with decreasing conductivity.
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