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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA16-10562S" target="_blank" >GA16-10562S: Viskozita a kinetické jevy ve sklotvorných systémech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

—

Svazek periodika

505

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

162-169

Kód UT WoS článku

000459643000020

EID výsledku v databázi Scopus

2-s2.0-85056828888