Crystallization kinetics in Se-Te glassy system

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Crystallization kinetics in Se-Te glassy system

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Crystallization kinetics in Se-Te glassy system

Popis výsledku anglicky

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.

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/GA104%2F08%2F1021" target="_blank" >GA104/08/1021: Fázové transformace v chalkogenidových materiálech pro záznam informace</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

—

Svazek periodika

357

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

3123-3129

Kód UT WoS článku

000294038500014

EID výsledku v databázi Scopus

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