The Concentration and Temperature Dependence of the Magnetic Susceptibility of Liquid Mercury Alloys

抄録

The molar magnetic susceptibility, χ_M of liquid Hg–Na and Hg–In alloys was measured from room temperature to 723 K using the Faraday method. The concentration dependence curve (CDC) of χ_M for liquid Hg–In alloys shows positive deviations from the linear law. The results of liquid Hg–Na alloys have a positively enhanced tendency in the intermediate concentration range, though the overall concentration dependence remains to be slightly negative (“W shape”); this type of CDC of χ_M is similar to that of liquid Hg–Cs alloys. Such a tendency of deviations has been discussed in terms of the nearly free electron theory for χ_M of liquid alloys. Maxima at a few at.% solute (In or Na) found in the CDC of the temperature coefficient of χ_M, dχ_M⁄dT, appear to indicate an evidence of higher order correlation effects, as observed in many liquid Hg alloys.