Light Scattering from Composition Fluctuations in the Superspinodal Region of a Phase-Separating Oxide Glass
Light scattering was used to observe composition fluctuations at temperatures in the single phase region of a phase-separating borosilicate glass. We report the first study of equilibrium fluctuations and the kinetics of their growth by means of light scattering from quenched samples. From the results the spinodal temperature for the glass is obtained. At each temperature observed the relaxation time for the fluctuations was determined. The results are discussed in terms of the classical and mode-mode coupling theories of critical fluctuations.
KeywordsRelaxation Time Heat Treatment Temperature Single Phase Region Laxation Time Critical Fluctuation
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