Isotope effect in the kinetics of crystallization of Ge32S1.35 (M = 72, 74, 76) glass
Source abstract
Abstract
The isotope effect of germanium ( MGe, M = 72, 74, 76) in the crystallization kinetics of the especially pure glass-forming system MGe 32S 1.35 from the state of supercooled melt has been revealed and quantitatively characterized by differential scanning calorimetry (DSC) in the range 320–900 K. The data obtained in the nonisothermal regime on the increase in the crystallization temperatures of GeS (from 417.2 °C to 422.2 °C) and GeS 2 (from 489.5 °C to 491.6 °C) in the series of these compounds with 72Ge, 74Ge, 76 Ge isotopes were supplemented by the necessary description of the kinetic isotope effect according to the ratio of the rate constants of quasi-chemical crystallization reactions. The found parameters can be used to plot the temperature-time dependences of the crystallization degree α (t, Т), reflecting in the form of parameters the kinetic isotope effect in the glass under study.
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Research context
OpenAlex topics: Thermal and Kinetic Analysis · Glass properties and applications · Phase-change materials and chalcogenides
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References (18)
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