Srikanth, S and Jacob, K T (1989) Activities in Liquid Ga-Te alloys at 1120 K. Thermochimica acta, 153 ( ). pp. 27-35.
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The activity of gallium in liquid Ga-Te alloys has been measured at 1120 K using a solid state galvanic cell incorporating yttria-stabilized thoria as the solid electrolyte. The cell can be schematically represented as (-) W,Re,Ga(1)+Ga2O3(s)|(Y2O3) ThO2|Ga-Te(1) + Ga2O3(s), Re, W (+) The activity of tellurium was derived by Gibbs-Duhem integration. The activity of gallium shows negative deviation from Raoult's law for XGa < 0.6 and positive deviation from ideality for XGa > 0.6. The activity of gallium was constant in the composition range 0.73 < XGa < 0.89, indicating liquid state immiscibility in this region. The Gibbs energy of mixing and the concentration-concentration structure factor at long wavelength limit show a minimum at XGa ≈ 0.4, suggesting strong intera-ctions in the liquid phase with formation of 'Ga2Te3'-type complexes.The Gibbs energy of mixing and the concentration-concentration structure factor at long wavelength limit show a minimum at X≈ 0.4, suggesting strong interactions in the liquid phase with formation of 'GaTe'-type comp-lexes.
|Uncontrolled Keywords:||gallium; negative deviation; tellurium|
|Deposited By:||Sahu A K|
|Deposited On:||23 Sep 2011 10:27|
|Last Modified:||30 Nov 2011 09:55|
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