“Chemical contraction” in rubidium–bismuth melts

Resumo

The density and thermal expansion of liquid rubidium and rubidium–bismuth alloy containing 25.0 at % Bi were measured by the gamma-ray attenuation technique at temperatures from liquidus to 1000 K. The results of this study were compared with the data obtained by other authors. The molar volume of the Rb₇₅Bi₂₅ melt strongly deviates from the additivity rule for ideal solutions.