Crystal Growth Velocity in As2Se3 Supercooled Liquid

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911952" target="_blank" >RIV/00216275:25310/17:39911952 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1021/acs.cgd.7b01001" target="_blank" >http://dx.doi.org/10.1021/acs.cgd.7b01001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.cgd.7b01001" target="_blank" >10.1021/acs.cgd.7b01001</a>

Result language

angličtina

Original language name

Crystal Growth Velocity in As2Se3 Supercooled Liquid

Original language description

The crystal growth velocity of spherulitic As2Se3 in a supercooled melt of the same composition was studied by optical microscopy and thermoanalytical methods in isothermal and nonisothermal conditions. The time dependence of crystal size is linear, which suggests the crystal growth is controlled by interface kinetics. Crystal growth velocity was determined as the slope of these linear dependences. The experimental results presented in this paper considerably extend the previously reported range of crystal growth velocity. All isothermal crystal growth velocity data can be well described by the standard two-dimensional surface nucleated growth model (2Dsg) including crystal growth viscosity decoupling (xi = 0.647). The activation energy of crystal growth for microscopic experiments is in a good agreement with values obtained from thermoanalytical experiments, and the ratio of the activation energy of crystal growth and the activation energy of viscous flow well corresponds to an independently determined decoupling parameter. The same model successfully describes also crystalline layer thickness and growth pattern at the amorphous As2Se3 surface in nonisothermal conditions.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20504 - Ceramics

Project

<a href="/en/project/GA16-10562S" target="_blank" >GA16-10562S: Viscosity and kinetic phenomena in glass-forming systems</a><br>

Continuities

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

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Crystal Growth &amp; Design

ISSN

1528-7483

e-ISSN

—

Volume of the periodical

17

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

4990-4999

UT code for WoS article

000410254800063

EID of the result in the Scopus database

2-s2.0-85028925150