Viscosity and Heat Capacity of As2Se3 Connected via Adam-Gibbs Model
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Viscosity and Heat Capacity of As2Se3 Connected via Adam-Gibbs Model
Popis výsledku v původním jazyce
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.
Název v anglickém jazyce
Viscosity and Heat Capacity of As2Se3 Connected via Adam-Gibbs Model
Popis výsledku anglicky
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.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20500 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of the American Ceramic Society
ISSN
0002-7820
e-ISSN
1551-2916
Svazek periodika
107
Číslo periodika v rámci svazku
2
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
15
Strana od-do
844-858
Kód UT WoS článku
001086698000001
EID výsledku v databázi Scopus
2-s2.0-85174042361