Add time:08/30/2019         Source:sciencedirect.com

The complex formation model is used to explain the anomalous behaviour of electrical resistivity and entropy of mixing of Li-Pb and Na-Pb liquid alloys as a function of concentration. The interionic pairpotentials (φij) are evaluated within the framework of the pseudo-potential theory which in turn is used to obtain the values for hard sphere diameters (σi) of Li, Na and Pb in the alloys. The study reveals that the constituent metals of these alloys undergo major structural changes in atomic and electronic character on alloying. The concentration dependent anomaly in electrical resistivity and entropy of mixing occurs due to preferential ordering of unlike atoms as nearest neighbours which could simultaneously be understood in Li-Pb and Na-Pb liquid alloys with the help of the complex formation model.

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