Electrical resistivities of liquid alkali-lead and alkali-indium alloys

Measurements of the resistivities of liquid K-Pb, K-In, Li-Pb and Na-In alloys are presented. The resistivities of the lead alloys exhibit a sharp peak at c Pb =21 at.% for Li-Pb and at c Pb =49 at.% for K-Pb. This is in agreement with the transition from simple ionic behaviour in Li-Pb to poly-anion formation in K-Pb. The maximum resistivity of K-Pb distinctly exceeds the range of metallic conduction. In the indium alloys the resistivity maximum is less pronounced and the theoretical description is more complicated.