Viscosity and Excess Entropy of As2S3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F25%3A39923281" target="_blank" >RIV/00216275:25310/25:39923281 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167732225013224" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167732225013224</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2025.128145" target="_blank" >10.1016/j.molliq.2025.128145</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Viscosity and Excess Entropy of As2S3

Popis výsledku v původním jazyce

This study presents a critical evaluation of experimental data on the heat capacity and viscosity of arsenic trisulfide and establishes a connection between these properties through excess entropy. As2S3 is a prototypical chalcogenide glass-former, renowned for its exceptional glass-forming ability and high glass stability. The work consolidates an extensive body of literature data on both the viscosity and heat capacity of this material, supplemented by accurate experimental viscosity measurements. The comprehensive analysis of these data enables the development of equations that characterize the viscosity over 14 orders of magnitude and describe heat capacity for crystal, glass, undercooled melt, and melt from 2 to 700 K. These representative equations for heat capacity enable the calculation of excess entropy, whose temperature dependence is subsequently linked to the temperature dependence of viscosity. The results demonstrate a strong correlation between viscosity and excess entropy, as described by the excess entropy model derived from Adam-Gibbs theory, where excess entropy is used in place of configurational entropy. Finally, the results are compared and correlated with prior findings for selenium and As2Se3, providing broader insights into the behavior of chalcogenide glass-formers.

Název v anglickém jazyce

Viscosity and Excess Entropy of As2S3

Popis výsledku anglicky

This study presents a critical evaluation of experimental data on the heat capacity and viscosity of arsenic trisulfide and establishes a connection between these properties through excess entropy. As2S3 is a prototypical chalcogenide glass-former, renowned for its exceptional glass-forming ability and high glass stability. The work consolidates an extensive body of literature data on both the viscosity and heat capacity of this material, supplemented by accurate experimental viscosity measurements. The comprehensive analysis of these data enables the development of equations that characterize the viscosity over 14 orders of magnitude and describe heat capacity for crystal, glass, undercooled melt, and melt from 2 to 700 K. These representative equations for heat capacity enable the calculation of excess entropy, whose temperature dependence is subsequently linked to the temperature dependence of viscosity. The results demonstrate a strong correlation between viscosity and excess entropy, as described by the excess entropy model derived from Adam-Gibbs theory, where excess entropy is used in place of configurational entropy. Finally, the results are compared and correlated with prior findings for selenium and As2Se3, providing broader insights into the behavior of chalcogenide glass-formers.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA24-10480S" target="_blank" >GA24-10480S: Fyzikální vlastnosti a termické chování chalkogenidových tenkých vrstev připravených z roztoku a termickým napařováním: Levné materiály pro IČ optiku</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

—

Svazek periodika

435

Číslo periodika v rámci svazku

October 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

128145

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105010854862