Crystallization of (GeSe2)(0.3)(Sb2Se3)(0.7) chalcogenide glass - Influence of reaction atmosphere

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914309" target="_blank" >RIV/00216275:25310/19:39914309 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0022309319300626?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309319300626?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2018.12.034" target="_blank" >10.1016/j.jnoncrysol.2018.12.034</a>

Result language

angličtina

Original language name

Crystallization of (GeSe2)(0.3)(Sb2Se3)(0.7) chalcogenide glass - Influence of reaction atmosphere

Original language description

Differential scanning calorimetry, infrared microscopy and X-ray diffraction analysis and were used to investigate the influence of reaction atmosphere (air versus pure nitrogen) on crystallization behavior of (GeSe2)(0.3)(Sb2Se3)(0.7) glass. The presence of oxygen was found to accelerate the crystal growth both on surface and in bulk material, with a similar effect in case of powders and bulk samples. Detailed crystallization kinetics study was performed, revealing that the presence of oxygen leads to a lowered activation energy and steeper onset of the process single-curve-averaged masterplot approach was used to deal with the temperature-differentiated complexity of the crystallization. Direct observations by infrared microscopy have shown that the presence of oxygen leads to a formation of robust surface crystalline layer, which prevents powder sintering and bulk samples deformation by viscous flow, and to a more rapid nucleation and crystal growth within the sample volume. Based on the viscosity values estimated for the crystallization temperatures, an explanation for the accelerated volume crystallization was proposed, employing the quasi-stationary conditions contributing to better cohesivity of critical nuclei and crystal/glass interface. The existence of the surface crystalline layer however prevents the sample from reaching full crystallinity.

Czech name

—

Czech description

—

Type

J_imp - 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/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

2019

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

509

Issue of the periodical within the volume

April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

23-30

UT code for WoS article

000461531000003

EID of the result in the Scopus database

2-s2.0-85061030176