Magnetic Susceptibility of Liquid Ag–Ga and Ag–In

Abstract

The anomalous composition dependence of the magnetic susceptibility in liquid Ag–Ga and Ag–In is investigated within the nearly free electron approximation using simple pseudo-potential theory. The characteristic humps on the silver rich side and the subsequent minima at higher contents (30 at.%) of polyvalent metal are well reproduced by the theory. These features are found to be primarily due to a pronounced modulation of the diamagnetic part of the electronic susceptibility induced by the interactions between the ionic cores and the conduction electrons. The theoretical temperature coefficients of the magnetic susceptibility are in good agreement with the experiment. Unlike to the magnetic susceptibility they pass through a minimum on the silver rich side followed by a maximum at 30 at.% of polyvalent metal, which suggests that the anomalies of the susceptibility vs. composition curve tend to disappear with increasing temperature. Similar to gold based liquid alloys the minima in the electronic suscept...