Short-range and medium-range order in molten Ga-Tl alloys

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Molten alloys of Ga-Tl were investigated by neutron small- and wide-angle scattering around the miscibility gap which occurs in the liquid state of this binary system. For the alloy containing 40 at.% Tl (the critical composition) and these of 5 at.%Tl less and more than that of the critical composition, an increase of the small-angle scattering intensity was observed as the temperature is decreased and approaches the temperature at the binodal curve, whereas the wide-angle scattering data show no temperature-dependent behaviour in the considered temperature-range. The Ornstein-Zernike formalism was applied to the small-angle scattering data and values for the critical-point exponents ν and γ were estimated. The latter are in good agreement with theoretical values and with results published for other demixing systems. © 2001 Elsevier Science B.V. All rights reserved.




Halm, T., Nomssi Nzali, J., Hoyer, W., May, R. P., & Bionducci, M. (2001). Short-range and medium-range order in molten Ga-Tl alloys. In Journal of Non-Crystalline Solids (Vol. 293–295, pp. 182–186).

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