Oxidation-influenced crystallization crystallization in (GeSe2)(x)(Sb2Se3)(1-x) chalcogenide glasse

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914324" target="_blank" >RIV/00216275:25310/19:39914324 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0022309319300341?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309319300341?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2019.01.020" target="_blank" >10.1016/j.jnoncrysol.2019.01.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Oxidation-influenced crystallization crystallization in (GeSe2)(x)(Sb2Se3)(1-x) chalcogenide glasse

Popis výsledku v původním jazyce

Influence of oxygen atmosphere on crystallization of (GeSe(2))(x)(Sb2Se3)(1-x) glasses (for x = 0.3, 0.4 and 0.5) was investigated by differential scanning calorimetry, X-ray diffraction analysis and infrared microscopy. Particlesize-dependent study was performed to reveal the role of mechanically induced defects. The presence of oxygen led to an early formation of a thin surface crystalline layer (smoothly structured) that significantly influenced further crystal growth. The most pronounced consequence was surprisingly found in case of the (GeSe2)(0.3)(Sb2Se3)(0.7) composition that crystallizes in volume. The thin surface crystalline layer hindered the macroscopic viscous flow, so that the samples retained their original shape, and these quasi-stationary conditions accelerated the initial nucleation and growth rates. At the same time, however, these conditions prevented the samples from reaching full crystallinity. In case of the compositions with x = 0.4 and 0.5, the crystal growth proceeded only at the surface and presence of external interfaces and mechanically induced defects took over the major role driving the crystallization kinetics. Correlation of the calorimetric, microscopic and viscosity data is discussed in detail.

Název v anglickém jazyce

Oxidation-influenced crystallization crystallization in (GeSe2)(x)(Sb2Se3)(1-x) chalcogenide glasse

Popis výsledku anglicky

Influence of oxygen atmosphere on crystallization of (GeSe(2))(x)(Sb2Se3)(1-x) glasses (for x = 0.3, 0.4 and 0.5) was investigated by differential scanning calorimetry, X-ray diffraction analysis and infrared microscopy. Particlesize-dependent study was performed to reveal the role of mechanically induced defects. The presence of oxygen led to an early formation of a thin surface crystalline layer (smoothly structured) that significantly influenced further crystal growth. The most pronounced consequence was surprisingly found in case of the (GeSe2)(0.3)(Sb2Se3)(0.7) composition that crystallizes in volume. The thin surface crystalline layer hindered the macroscopic viscous flow, so that the samples retained their original shape, and these quasi-stationary conditions accelerated the initial nucleation and growth rates. At the same time, however, these conditions prevented the samples from reaching full crystallinity. In case of the compositions with x = 0.4 and 0.5, the crystal growth proceeded only at the surface and presence of external interfaces and mechanically induced defects took over the major role driving the crystallization kinetics. Correlation of the calorimetric, microscopic and viscosity data is discussed in detail.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA17-11753S" target="_blank" >GA17-11753S: Kinetická analýza komplexních fyzikálně chemických procesů</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

510

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

6-14

Kód UT WoS článku

000462110000002

EID výsledku v databázi Scopus

2-s2.0-85061660392