Effect of Intermodulation on Measurement of Small Hall Coefficients with Double ac Method

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Abstract
The effect of intermodulation on the double ac method is described with emphasis on the mixing of the sample current frequency with the frequency of the magnetic field in the current circuit of the apparatus. The resulting voltages at the same frequency as the Hall voltage are coupled to the Hall voltage measuring circuit by the probe misalignment and the mutual inductance of the leads. Methods to eliminate the disturbing effects due to intermodulation are discussed.

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