Thermal behavior of Se-rich GeSb2Se(4-y)Tey (glassy) system
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901211" target="_blank" >RIV/00216275:25310/16:39901211 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.jallcom.2016.02.052" target="_blank" >http://dx.doi.org/10.1016/j.jallcom.2016.02.052</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2016.02.052" target="_blank" >10.1016/j.jallcom.2016.02.052</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Thermal behavior of Se-rich GeSb2Se(4-y)Tey (glassy) system
Popis výsledku v původním jazyce
The thermokinetic behavior of the GeSb2Se(4-y)Tey glassy chalcogenide system (a compositional analog of the famous GST-124 PCM material) was thoroughly investigated. Regarding the glass transition kinetics, the substitution of Se by Te was found to lead to looser structural packing resulting in lower activation energy and more independent relaxation movements. On the other hand, in the case of cold crystallization (studied in dependence on particle size) the addition of Te led to the formation of different crystalline phases with higher activation energy of the crystallization process. In addition, based on the description in terms of the Johnson-Mehl-Avrami nucleation-growth kinetics it was found that the Te addition resulted in prioritization of the volume-located 3D crystal growth. Furthermore, P-type heat capacity dependence was found to occur in the present chalcogenide system, where the Te addition led to an increase of the C-p-T curvature in the undercooled liquid. Concerning the overall thermokinetic characterization, the effect of Se <-> Te substitution on glass-stability and glass-forming ability was discussed.
Název v anglickém jazyce
Thermal behavior of Se-rich GeSb2Se(4-y)Tey (glassy) system
Popis výsledku anglicky
The thermokinetic behavior of the GeSb2Se(4-y)Tey glassy chalcogenide system (a compositional analog of the famous GST-124 PCM material) was thoroughly investigated. Regarding the glass transition kinetics, the substitution of Se by Te was found to lead to looser structural packing resulting in lower activation energy and more independent relaxation movements. On the other hand, in the case of cold crystallization (studied in dependence on particle size) the addition of Te led to the formation of different crystalline phases with higher activation energy of the crystallization process. In addition, based on the description in terms of the Johnson-Mehl-Avrami nucleation-growth kinetics it was found that the Te addition resulted in prioritization of the volume-located 3D crystal growth. Furthermore, P-type heat capacity dependence was found to occur in the present chalcogenide system, where the Te addition led to an increase of the C-p-T curvature in the undercooled liquid. Concerning the overall thermokinetic characterization, the effect of Se <-> Te substitution on glass-stability and glass-forming ability was discussed.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
CF - Fyzikální chemie a teoretická chemie
OECD FORD obor
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Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
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Svazek periodika
670
Číslo periodika v rámci svazku
June
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
7
Strana od-do
222-228
Kód UT WoS článku
000371765800030
EID výsledku v databázi Scopus
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