Kinetika růstu krystalů GeS2 ve skelné matrici Ge 0,38 S 02,62.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F05%3A00003238" target="_blank" >RIV/00216275:25310/05:00003238 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Kinetics of crystal growth of germanium disulfide in Ge0.38S0.62 chalcogenide glass.

Popis výsledku v původním jazyce

The crystal growth kinetics of GeS2 in Ge0.38S0.62 glass has been studied by Differential Scanning Calorimetry (DSC) and microscopy. The linear crystal growth kinetics of both high temperature and low temperature polymorphs has been observed over a relatively broad range of temperatures, i.e. 420 < T < 494 oC that correspond to viscosity of supercooled melt. It seems that 2D nucleated growth is the most probable mechanism of crystallization for high temperature under these conditions. However, there aresignificant deviations for this model for the crystallization of low-temperature. This might indicate some changes in crystal-melt interfacial energy or break down of Stokes-Einstein relation in that particular case. At temperatures below the temperature range of directly observed crystal growth overlaps with isothermal DSC measurements. In this case overall crystallization kinetics can be described by the Johnson-Mehl-Avrami (JMA) nucleation-growth model for kinetic exponent. The value

Název v anglickém jazyce

Kinetics of crystal growth of germanium disulfide in Ge0.38S0.62 chalcogenide glass.

Popis výsledku anglicky

The crystal growth kinetics of GeS2 in Ge0.38S0.62 glass has been studied by Differential Scanning Calorimetry (DSC) and microscopy. The linear crystal growth kinetics of both high temperature and low temperature polymorphs has been observed over a relatively broad range of temperatures, i.e. 420 < T < 494 oC that correspond to viscosity of supercooled melt. It seems that 2D nucleated growth is the most probable mechanism of crystallization for high temperature under these conditions. However, there aresignificant deviations for this model for the crystallization of low-temperature. This might indicate some changes in crystal-melt interfacial energy or break down of Stokes-Einstein relation in that particular case. At temperatures below the temperature range of directly observed crystal growth overlaps with isothermal DSC measurements. In this case overall crystallization kinetics can be described by the Johnson-Mehl-Avrami (JMA) nucleation-growth model for kinetic exponent. The value

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

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

2005

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

—

Číslo periodika v rámci svazku

351

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

557-567

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—