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The values of the apparent activation energy (ΔE), obtained from the variations of the glass transition temperature with heating rate, were investigated for different vitreous chalcogenide alloys. We observe, for vitreous Se, that ΔE is sensitive to the connectivity of the network (number of Se-8 rings). For binary alloys SeY (Y = As, Ge), for which the Y-atoms respect the 8-N rule, the variations...
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