Kinetika růstu krystalů Sb2S3 ve skle (GeS2)0.3(Sb2S3)0.7

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004104" target="_blank" >RIV/00216275:25310/06:00004104 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass

Popis výsledku v původním jazyce

The crystal growth kinetics of antimony sulphide in (GeS2)0.3(Sb2S3)0.7 glass has been studied by DSC and microscopy. The linear crystal growth kinetics has been observed in the temperature range 271 T 310 °C (EG=288 7 kJ?mol-1). In fact the crystal growth takes place in the volume of highly viscous (4?107 3?104 Pa?s), supercooled melt. The applicability of standard growth models has been assessed. From the reduce growth rate plot (i.e., growth rate corrected for viscosity) as a function of supercoolingwe find that the most probable mechanism is the interface controlled 2D nucleated growth. The non-isothermal DSC data, corresponding to the bulk sample, can be described by the Johnson-Mehl-Avrami equation that provides a reasonable description of crystallization behavior also for partially crystallized samples. However, further analysis of DSC data reveals that this equation cannot be applied for the powder sample even in isothermal conditions.

Název v anglickém jazyce

Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass

Popis výsledku anglicky

The crystal growth kinetics of antimony sulphide in (GeS2)0.3(Sb2S3)0.7 glass has been studied by DSC and microscopy. The linear crystal growth kinetics has been observed in the temperature range 271 T 310 °C (EG=288 7 kJ?mol-1). In fact the crystal growth takes place in the volume of highly viscous (4?107 3?104 Pa?s), supercooled melt. The applicability of standard growth models has been assessed. From the reduce growth rate plot (i.e., growth rate corrected for viscosity) as a function of supercoolingwe find that the most probable mechanism is the interface controlled 2D nucleated growth. The non-isothermal DSC data, corresponding to the bulk sample, can be described by the Johnson-Mehl-Avrami equation that provides a reasonable description of crystallization behavior also for partially crystallized samples. However, further analysis of DSC data reveals that this equation cannot be applied for the powder sample even in isothermal conditions.

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%2F04%2F0072" target="_blank" >GA104/04/0072: Krystalizační procesy v podchlazených sklotvorných kapalinách</a><br>

Návaznosti

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

Rok uplatnění

2006

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

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Svazek periodika

1

Číslo periodika v rámci svazku

352

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

2243-2253

Kód UT WoS článku

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EID výsledku v databázi Scopus

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