Crystallization kinetics in Se-Te glassy system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F11%3A39892383" target="_blank" >RIV/00216275:25310/11:39892383 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2011.05.002" target="_blank" >http://dx.doi.org/10.1016/j.jnoncrysol.2011.05.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2011.05.002" target="_blank" >10.1016/j.jnoncrysol.2011.05.002</a>

Result language
angličtina
Original language name
Crystallization kinetics in Se-Te glassy system
Original language description
Differential scanning calorimetry measurements were used to studycrystallization in the Se(y)Te((1) (-) (y)) glassy system under non-isothermal conditions. The examined compositions were y = 0.1, 0.2 and 0.3. The crystallization kinetics was described interms of the Johnson-Mehl-Avrami nucleation-growth model. It was found that with the addition of tellurium into the selenium matrix the apparent activation energy of the crystallization process monotonically increases and, more importantly, the parameter of the JMA model m decreases. This change in the crystallization mechanism was interpreted as a gradual crossover from surface to bulk process. Boils processes are competitive and proceed simultaneously in glasses with low tellurium content, while in the case of increased Te content the surface crystallization mechanism recedes. The transition between mechanisms was discussed in terms of changes in molecular structure of the material.
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/GA104%2F08%2F1021" target="_blank" >GA104/08/1021: Phase transformations in chalcogenide materials for data storage media</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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