Volume changes during melting and heating of silicon and germanium melts

摘要: The temperature dependence of the density silicon and germanium in neighborhood crystal-melt phase transition is investigated by an improved thermometric method. Changes volume occurring during from solid to liquid state are estimated. It shown that increases process and, accordingly, specific decreases both germanium; increase pressure noticeably melting points substances. A linear obtained. strength characteristics interatomic bonds estimated such as characteristic Debye temperatures root-mean-square dynamic displacements atoms equilibrium position short-range order structure melts weakens cohesive forces between particles substantially changes pattern their oscillation spectrum.