Relationship between crystal growth and surface/volume mobilities in Se95Te5 bulk glasses and thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39918019" target="_blank" >RIV/00216275:25310/21:39918019 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1359645421003335?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1359645421003335?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2021.116953" target="_blank" >10.1016/j.actamat.2021.116953</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relationship between crystal growth and surface/volume mobilities in Se95Te5 bulk glasses and thin films

Popis výsledku v původním jazyce

The mobility of structural units in amorphous materials has a significant influence on crystal growth. In this study, we show that the motion of structural units from the amorphous matrix to the growing crystals in the volume of the Se95Te5 bulk samples can be adequately described by viscosity. Nevertheless, surface crystal growth results in a much faster growth in bulk and thin films samples, which can be attributed to a high surface mobility, similar to the behavior of organic molecular glasses. Based on current theories, the crystal growth in Se95Te5 bulk and thin film was described by standard crystal growth models, with the kinetic mobility represented in terms of viscosity and surface diffusion. Furthermore, the surface crystal growth in Se95Te5 was monitored at temperatures down to the glass transition temperature and below, and exhibited a similar behavior to that observed in molecular glasses. In addition, the near-surface viscosities estimated from the smoothing process of a periodic sinusoidal surface grating embossed onto the surface of thin film and bulk samples exhibited similar values to the bulk viscosities. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Relationship between crystal growth and surface/volume mobilities in Se95Te5 bulk glasses and thin films

Popis výsledku anglicky

The mobility of structural units in amorphous materials has a significant influence on crystal growth. In this study, we show that the motion of structural units from the amorphous matrix to the growing crystals in the volume of the Se95Te5 bulk samples can be adequately described by viscosity. Nevertheless, surface crystal growth results in a much faster growth in bulk and thin films samples, which can be attributed to a high surface mobility, similar to the behavior of organic molecular glasses. Based on current theories, the crystal growth in Se95Te5 bulk and thin film was described by standard crystal growth models, with the kinetic mobility represented in terms of viscosity and surface diffusion. Furthermore, the surface crystal growth in Se95Te5 was monitored at temperatures down to the glass transition temperature and below, and exhibited a similar behavior to that observed in molecular glasses. In addition, the near-surface viscosities estimated from the smoothing process of a periodic sinusoidal surface grating embossed onto the surface of thin film and bulk samples exhibited similar values to the bulk viscosities. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Svazek periodika

213

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

"116953-1"-"116953-9"

Kód UT WoS článku

000670078400005

EID výsledku v databázi Scopus

2-s2.0-85106510075