We have measured the sound velocity of liquid Se-Te mixtures up to 1050°C and 1500 bar, and estimated the adiabatic compressibility βS and the long wavelength limit of density-density correlation function, SNN(0). There appear the maxima in the temperature variations of βS and the inflections in those of SNN(0), which indicate clearly the transformation from Se-like to Te-like structure associated with pressure-induced semiconductor-to-metal transition.
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Ken-ichi Takimoto (1982) studied this question.
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