From the 15 MHz ultrasound velocity (shear and longitudinal) the elastic parameters (E, G, K) have been calculated, other than the Debye temperature θm in solid Se1−xTex amorphous alloys in the temperature region containing the Tg range. Assisted by results of optical spectroscopy and by shear viscosity tests an analysis has been carried out to explain the role of tellurium in these alloys. We find a double action played through the covalent bonds in the inside of the copolymeric chains and between them by means of the Van der Waals forces. Other results, from the literature, have been taken into account to support our hypothesis.
Elastic constants in Sex Te1-x glasses alloys: the role of tellurium
CARINI, Giuseppe;CUTRONI, Maria;FEDERICO, Mauro;GALLI, Giovanni
1984-01-01
Abstract
From the 15 MHz ultrasound velocity (shear and longitudinal) the elastic parameters (E, G, K) have been calculated, other than the Debye temperature θm in solid Se1−xTex amorphous alloys in the temperature region containing the Tg range. Assisted by results of optical spectroscopy and by shear viscosity tests an analysis has been carried out to explain the role of tellurium in these alloys. We find a double action played through the covalent bonds in the inside of the copolymeric chains and between them by means of the Van der Waals forces. Other results, from the literature, have been taken into account to support our hypothesis.File in questo prodotto:
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