Viscosity and Heat Capacity of As2Se3 Connected via Adam-Gibbs Model
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39922095" target="_blank" >RIV/00216275:25310/24:39922095 - isvavai.cz</a>
Result on the web
<a href="https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.19491" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/epdf/10.1111/jace.19491</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jace.19491" target="_blank" >10.1111/jace.19491</a>
Alternative languages
Result language
angličtina
Original language name
Viscosity and Heat Capacity of As2Se3 Connected via Adam-Gibbs Model
Original language description
The viscosity data measured by penetration and parallel-plate methods for As2Se3 glass and undercooled melt were compared with literature data. The MYEGA equation (log eta(0) = -4.67 +/- 0.12, m = 43.2 +/- 0.4, and T-12 = 441.7 +/- 0.3 K) was used for the description of the selected viscosity data, including melt region (15 orders of magnitude). The heat capacity data for As2Se3 glass, undercooled melt, and melt, as well as for crystalline As2Se3 were determined for low and medium-range temperature intervals. These data were compared with previously reported data. Equations that describe the heat capacity of As2Se3 in a broad temperature interval were formulated. The values of the standard molar enthalpy, Delta H-T(0)m(0), and entropy, Delta S-T(0)m(0), at T = 298.15 K are 26.202 kJ<middle dot>mol(-1) and 193.8 J<middle dot>mol(-1)<middle dot>K-1, respectively. The heat capacity data determined from very low temperatures were used for the calculation of crystal, glass, and melt entropies. These heat capacity temperature dependencies were used both for the estimation of the Kauzmann temperature (T-K = 292.5 K) and the glass entropy at 0 K (S-0 = 25.96 J<middle dot>mol(-1)<middle dot>K-1), and for the determination of the excess entropy. The proportionality between the viscosity of the As2Se3 melt and the excess entropy clearly indicates the applicability of the Adam-Gibbs (AG) model.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the American Ceramic Society
ISSN
0002-7820
e-ISSN
1551-2916
Volume of the periodical
107
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
844-858
UT code for WoS article
001086698000001
EID of the result in the Scopus database
2-s2.0-85174042361