Particle size dependent isothermal crystallization kinetics in a Se-Te glassy system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39899433" target="_blank" >RIV/00216275:25310/15:39899433 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.tca.2015.04.024" target="_blank" >http://dx.doi.org/10.1016/j.tca.2015.04.024</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tca.2015.04.024" target="_blank" >10.1016/j.tca.2015.04.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Particle size dependent isothermal crystallization kinetics in a Se-Te glassy system

Popis výsledku v původním jazyce

Differential scanning calorimetry (DSC) was used to study the crystallization behaviour in a selenium-tellurium (Se-Te) glassy system under isothermal conditions. The particle-size-dependent isothermal crystallization kinetics were described in terms ofthe Johnson-Mehl-Avrami (JMA) nucleation-growth model. The complexity of the crystallization process was found to be represented by overlapping competing surface and bulk nucleation-growth mechanisms. Based on the deconvolution in terms of the JMA model,the particular crystal growth processes were identified, and the interpretation of their physical origins was performed. Presence of the A and B types of spherulitic crystallites was confirmed; the temperature range of the transition in-between these two spherulitic forms was determined to be similar as for pure selenium. Increasing tellurium content was found to cause an increase of the apparent activation energy of the overall crystallization process as well as a gradual increase of t

Název v anglickém jazyce

Particle size dependent isothermal crystallization kinetics in a Se-Te glassy system

Popis výsledku anglicky

Differential scanning calorimetry (DSC) was used to study the crystallization behaviour in a selenium-tellurium (Se-Te) glassy system under isothermal conditions. The particle-size-dependent isothermal crystallization kinetics were described in terms ofthe Johnson-Mehl-Avrami (JMA) nucleation-growth model. The complexity of the crystallization process was found to be represented by overlapping competing surface and bulk nucleation-growth mechanisms. Based on the deconvolution in terms of the JMA model,the particular crystal growth processes were identified, and the interpretation of their physical origins was performed. Presence of the A and B types of spherulitic crystallites was confirmed; the temperature range of the transition in-between these two spherulitic forms was determined to be similar as for pure selenium. Increasing tellurium content was found to cause an increase of the apparent activation energy of the overall crystallization process as well as a gradual increase of t

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

2015

Kód důvěrnosti údajů

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

Název periodika

Thermochimica Acta

ISSN

0040-6031

e-ISSN

—

Svazek periodika

610

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

47-56

Kód UT WoS článku

000355707700007

EID výsledku v databázi Scopus

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