Thermal characterization of (As2Se3)(0.5)(As2Te3)(0.5) infrared glass

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911956" target="_blank" >RIV/00216275:25310/17:39911956 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2017.09.011" target="_blank" >http://dx.doi.org/10.1016/j.jnoncrysol.2017.09.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2017.09.011" target="_blank" >10.1016/j.jnoncrysol.2017.09.011</a>

Result language

angličtina

Original language name

Thermal characterization of (As2Se3)(0.5)(As2Te3)(0.5) infrared glass

Original language description

The structural relaxation and crystallization kinetics of the (As2Se3)(0.5)(As2Te3)(0.5) chalcogenide glass was studied by means of differential scanning calorimetry (DSC) and the influence of experimental conditions (particle size, heating rate) was observed. The Tool-Narayanaswamy-Moynihan (TNM) model was used for description of structural relaxation data. The structure of the studied glass was found to be similar to its purely selenide analogue (As2Se3), but the Te atoms appear to randomly incorporate into the short Se-As-Te chains; also they coexist in AsTe3/2 pyramidal units alongside the AsSe3/2 units. In case of the description of the crystallization kinetics, the nucleation-growth Johnson-Mehl-Avrami (JMA) model and the semi-empirical autocatalytic AC(M,N) model were tested on experimental DSC data. The suitability of JMA model was not confirmed due to the complexity of crystallization, therefore the AC(M,N) model was applied. These results were supported by the structural information from XRD analysis, Raman spectroscopy and infrared (IR) microscopy. The presence of As-Te, As-Se and As2Se(Te)(3) phases was confirmed and the occurrence of tellurium in the structure has a huge influence on overall structure and subsequent thermal behavior of the (As2Se3)(0.5)(As2Te3)(0.5) glassy material.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20500 - Materials engineering

Project

<a href="/en/project/GA17-11753S" target="_blank" >GA17-11753S: Kinetic analysis of complex physico-chemical processes</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

—

Volume of the periodical

475

Issue of the periodical within the volume

November

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

121-128

UT code for WoS article

000413127700018

EID of the result in the Scopus database

2-s2.0-85030851105