Thermal behavior of Se-rich GeSb2Se(4-y)Tey (glassy) system

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Thermal behavior of Se-rich GeSb2Se(4-y)Tey (glassy) system
Original language description
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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/GAP106%2F11%2F1152" target="_blank" >GAP106/11/1152: Reversible crystallization and structural relaxation in amorphous materials used for phase change recording</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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