Structural and energetic anomaly in liquid Na-Sn alloys

► There is a tendency of unlike atoms pairing (Na-Sn) in liquid Na-Sn alloys at all concentration except xNa = 0.1. ► The analysis shows that the molten Na-Sn system is strongly interacting system. ► The energy parameters of this system depend on temperature. ► The alloy is more ordered at intermediate region.