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Article Dans Une Revue Journal of Chemical Physics Année : 2007

Development of structural order during supercooling of a fragile oxide melt

Résumé

The authors have studied the structural evolution of the fragile glass-forming liquid CaAl2O4 during supercooling from the stable liquid phase to the cold glass below Tg. The evolution is characterized by a sharpening of the first diffraction peak and a shortening of the average nearest-neighbor bond length around 1.25Tg, indicating an increase in the degree of both intermediate-range and short-range orders occurring close to the dynamical crossover temperature. The cooling curve developed a kink at this temperature, indicating a simultaneous change in thermodynamic properties.
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Dates et versions

hal-00136028 , version 1 (11-03-2007)

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Louis Hennet, Irina Pozdnyakova, Aleksei Bytchkov, David L. Price, Neville G. Greaves, et al.. Development of structural order during supercooling of a fragile oxide melt. Journal of Chemical Physics, 2007, 126, pp.074906. ⟨10.1063/1.2646812⟩. ⟨hal-00136028⟩
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