Univerzita PardubiceFakulta chemicko- technologická

Univerzita Pardubice

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English

Publikace detail

Crystal growth in chalcogenide glass-formes prepared in different forms and its relation to viscosity and diffusion

Autoři: Barták Jaroslav | Vaculík David | Včeláková Michaela

Rok: 2024

Druh publikace: ostatní - přednáška nebo poster

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Crystal growth in chalcogenide glass-formes prepared in different forms and its relation to viscosity and diffusion	This work focuses on crystal growth in Ge25Se75 bulk glasses and thin films prepared by thermal evaporation and solution processing. Crystal growth data were obtained using infrared microscopy measurements, showing a change in crystal morphology within the broad studied temperature region (250 – 550 ◦C). Nevertheless, a single crystal growth model could describe the crystal growth rates. The combination of viscosity and crystal growth data provides an extensive collection essential for crystal growth description in a wide temperature range. The found crystal growth model describing the experimental data provides information about the size of structural units incorporated into the growing crystals. The structural unit size is then used for the estimation of self-diffusion coefficients (D) that show a similar relation with crystal growth rates (u) as was found in molecular glasses (u ≈ Dˆ0.87).	Crystal growth; chalcogenide glass; viscosity; diffusion