Temperature dependence of the electrical resistivity of liquid lead between its freezing point and 800°c

Abstract

The electrical resistivity of liquid lead was measured between its freezing point, t_F = 327.5 and 800°C with a relative accuracy better than 2.5 × 10⁻²%. The resistivity was found to be a concave function of temperature of the form p(X) = a ₁.X+a ₂.[1 - exp(- a ₃.X)] + p_o , where X = t-t_F , in the whole range studied. The temperature coefficient of resistivity is a continuous and decreasing function of temperature. A possible explanation of the observed phenomenon is suggested