The effect of Se a dagger" Te substitution on crystallisation micro-mechanisms evincing in GeTe4 glass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901016" target="_blank" >RIV/00216275:25310/16:39901016 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10973-015-4962-9" target="_blank" >http://dx.doi.org/10.1007/s10973-015-4962-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-015-4962-9" target="_blank" >10.1007/s10973-015-4962-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of Se a dagger" Te substitution on crystallisation micro-mechanisms evincing in GeTe4 glass

Popis výsledku v původním jazyce

Isothermal and non-isothermal crystallisation behaviour of the GeTe3.9Se0.1 chalcogenide glass was studied dependent on particle size and compared to the similar DSC study performed for the pure GeTe4 material. The effect of the Se a dagger" Te substitution led to a decrease in the crystallisation process complexity in the case of powdered materials-the addition of Se led to domination of the slower nucleation-growth crystallisation mechanism over the fast autocatalytic growth from mechanically induced defects. The nature of the crystallisation mechanisms was confirmed by infrared microscopy and XRD. The addition of selenium into the GeTe4 matrix caused an enlargement of the identified crystallites; this, together with the overall deceleration of the crystallisation processes, indicates the suppression of nucleation processes. The presence of Se also greatly enhanced domination of the CNT-based three-dimensional growth of volume-located crystallites. The obtained findings provide a very good explanation for the markedly increased thermal stability of Se-doped Ge-Te infrared glasses.

Název v anglickém jazyce

The effect of Se a dagger" Te substitution on crystallisation micro-mechanisms evincing in GeTe4 glass

Popis výsledku anglicky

Isothermal and non-isothermal crystallisation behaviour of the GeTe3.9Se0.1 chalcogenide glass was studied dependent on particle size and compared to the similar DSC study performed for the pure GeTe4 material. The effect of the Se a dagger" Te substitution led to a decrease in the crystallisation process complexity in the case of powdered materials-the addition of Se led to domination of the slower nucleation-growth crystallisation mechanism over the fast autocatalytic growth from mechanically induced defects. The nature of the crystallisation mechanisms was confirmed by infrared microscopy and XRD. The addition of selenium into the GeTe4 matrix caused an enlargement of the identified crystallites; this, together with the overall deceleration of the crystallisation processes, indicates the suppression of nucleation processes. The presence of Se also greatly enhanced domination of the CNT-based three-dimensional growth of volume-located crystallites. The obtained findings provide a very good explanation for the markedly increased thermal stability of Se-doped Ge-Te infrared glasses.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F11%2F1152" target="_blank" >GAP106/11/1152: Reverzibilní krystalizace a strukturni relaxace amorfních materiálů pro záznam informace</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Svazek periodika

123

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

205-219

Kód UT WoS článku

000368187700019

EID výsledku v databázi Scopus

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