Development of Non-Contact Electrical Resistivity Measurement Technique using an Electrostatic Levitator

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  • Development of non-contact electrical resistivity measurement technique using an electrosta levitator

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Abstract

A non-contact technique to measure the electrical resistivity of levitated samples is reported. The technique utilizes　the principle of the asynchronous induction motor, measuring the induced torque by applying a rotating magnetic field　to the sample. Relation between sample size and induced torque was experimentally checked with aluminum samples　and proved that induced torque is proportional to the fifth power of the sample radius. Based on this result, the electrical resistivity of solid zirconium at high temperatures was measured and showed a good agreement with literature data.

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