Publikace detail

Crystal growth in Ge-Sb-Se glass and its relation to viscosity and surface diffusion

Autoři: Valdes Mitchell Diego Alejandro | Martinková Simona | Málek Jiří | Barták Jaroslav

Rok: 2021

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Non-Crystalline Solids

Název nakladatele: Elsevier Science BV

Místo vydání: Amsterdam

Strana od-do: "120865-1"-"120865-9"

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Krystalový růst v Ge-Sb-Se sklech a jeho vztah k viskozitě a povrchové difuzi	Kinetika krystalového růstu Sb2Se3 byla sledována ve sklech (GeSe2)x(Sb2Se3)1-x o složení x = 0.4, 0.5 pomocí infračervené mikroskopie. Výsledky byly interpretovány na základě viskozitního a difuzního chování.	chalkogenidy; růst krystalů; viskozita; povrchová difuze
eng	Crystal growth in Ge-Sb-Se glass and its relation to viscosity and surface diffusion	The crystal growth kinetics of Sb2Se3 in (GeSe2)x(Sb2Se3)1-x with compositions (x = 0.4, 0.5) were studied using infrared microscopy. Direct observation revealed two types of crystal growth during the overall process of crystal nucleation and growth: lateral crystal growth at the surface and crystal growth in the volume of the bulk sample (""volume crystal growth""). Both growth processes were studied in a wide temperature range within the frameworks of current crystal growth theories with respect to the transport of structural units from the amorphous phase toward the crystalline phase. The kinetic transport of structural units during the crystal growth can be described by viscosity in the case of volume crystal growth. Nevertheless, in surface crystal growth the transport of structural units deviates from viscous flow and is influenced by surface diffusion. The comprehensive analysis of relation between surface crystal growth, viscous flow and surface diffusion is given within this work.	Chalcogenides; Crystal growth; Viscosity; Surface diffusion

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