Investigation of the Structural Changes in the Molten Ga-Te System Using Sound Velocity and Density Measurements

抄録

Sound velocity and density measurements have been carried out in the liquid Ga-Te system as a function of temperature and composition. Results obtained have been used to deduce the compressibility, molar volume and thermal expansion coefficient with respect to the variation of temperature and composition. Two-melt region in the Ga rich region has been determined. Critical behavior of sound velocity has been observed in the two-melt region. Discussion has been carried out in terms of the structural change of Ga₂Te₃ association and the concentration fluctuations induced by the structural change in the melt.