Correlation between the structure and structural relaxation data for (GeSe2)(y)(Sb2Se3)(1-y) glasses

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914322" target="_blank" >RIV/00216275:25310/19:39914322 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0022309318306689?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309318306689?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2018.11.013" target="_blank" >10.1016/j.jnoncrysol.2018.11.013</a>

Result language
angličtina
Original language name
Correlation between the structure and structural relaxation data for (GeSe2)(y)(Sb2Se3)(1-y) glasses
Original language description
Combined calorimetric and structural study, employing the techniques of differential scanning calorimetry and Raman spectroscopy, was performed to describe the enthalpy relaxation processes in the (GeSe2)(y)(Sb2Se3)(1-y) chalcogenide glasses. The full glass forming compositional region (y = 0.3-0.9) was explored. The enthalpy relaxation was described in terms of the phenomenological Tool-Narayanaswamy-Moynihan model. Compositional evolution of the glass transition temperatures and relaxation activation energies was explained based on the changing average bond energies and overall interconnectivity of the glassy matrices. Resemblance between the activation energies of the relaxation processes and viscous flow was confirmed for all studied glasses. Non-linearity and non-exponentiality of the enthalpy relaxation were found to be invariant with composition. The structural relaxation kinetics as well as kinetic fragilities determined for the present (GeSe2)(y)(Sb2Se3)(1-y) glassy system were very similar to the results obtained earlier for the (GeS2)(y)(Sb2S3)(1-y) glasses, which can be attributed to the similarly constrained topology of the pseudo-binary compositional lines.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/GA16-10562S" target="_blank" >GA16-10562S: Viscosity and kinetic phenomena in glass-forming systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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