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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F06%3A00004104%21RIV08-GA0-25310___
rdf:type
n13:Vysledek skos:Concept
dcterms:description
Kinetika růstu krystalů sulfidu antimonitého ve skle (GeS2)0.3(Sb2S3)0.7 byla studována pomocí DSC a mikroskopie. V teplotním rozsahu 271 T 310 °C (EG=288 7 kJ?mol-1) byl pozorován lineární růst krystalů. Sledovaný růst krystalů probíhal u vzorků ve stavu podchlazené taveniny (vysoká viskozita 4?107 3?104 Pa?s). Byly testovány standardní modely růstu. Ze závislosti redukované rychlosti růstu (tj. rychlost růstu s korekcí na viskozitu) na podchlazení bylo zjištěno, že nejpravděpodobnější mechanismus je 2D nukleační růst. Neizotermní DSC data pro objemový vzorek mohou být popsána Johnson-Mehl-Avrami rovnicí, která také dostatečně popisuje krystalizaci částečně zakrystalovaných vzorků. Nicméně další analýza DSC dat ukazuje, že tato rovnice nemůže být použita pro popis krystalizace práškových vzorků. 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 supercooling we 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. 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 supercooling we 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.
dcterms:title
Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass Kinetika růstu krystalů Sb2S3 ve skle (GeS2)0.3(Sb2S3)0.7
skos:prefLabel
Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass Kinetika růstu krystalů Sb2S3 ve skle (GeS2)0.3(Sb2S3)0.7 Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass
skos:notation
RIV/00216275:25310/06:00004104!RIV08-GA0-25310___
n3:strany
2243-2253
n3:aktivita
n14:P
n3:aktivity
P(GA104/04/0072)
n3:cisloPeriodika
352
n3:dodaniDat
n17:2008
n3:domaciTvurceVysledku
n11:3988163
n3:druhVysledku
n7:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
481666
n3:idVysledku
RIV/00216275:25310/06:00004104
n3:jazykVysledku
n8:eng
n3:klicovaSlova
Crystal growth; chalcogenides; optical microscopy; scanning electron microscopy; viscosity
n3:klicoveSlovo
n6:viscosity n6:Crystal%20growth n6:scanning%20electron%20microscopy n6:chalcogenides n6:optical%20microscopy
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[174F8E353D89]
n3:nazevZdroje
Journal of Non-Crystalline Solids
n3:obor
n9:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n18:GA104%2F04%2F0072
n3:rokUplatneniVysledku
n17:2006
n3:svazekPeriodika
1
n3:tvurceVysledku
Švadlák, Daniel Málek, Jiří Mitsuhashi, T. Haneda, H.
s:issn
0022-3093
s:numberOfPages
11
n10:organizacniJednotka
25310