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Thermal conductivity of the AsxS100–x glass system at low temperatures.

Authors :
Baloh, Pavlo
Tkáč, Vladimír
Tarasenko, Róbert
Orendáč, Martin
Orendáčová, Alžbeta
Mitsa, Oleksandr
Mitsa, Vladimir
Holomb, Roman
Feher, Alexander
Source :
Low Temperature Physics; May2023, Vol. 49 Issue 5, p544-547, 4p
Publication Year :
2023

Abstract

The temperature dependence of the thermal conductivity k(T) of the As<subscript>x</subscript>S<subscript>100-x</subscript> glass system was studied down to 1.8 K in a wide range of various (x = 20, 28.6, 40, 45, and 50) compositions. Universal glass anomalies in k(T) were revealed. The temperature dependence k(T) ∼ T<superscript>2</superscript> onset at the lowest temperatures and plateau below 15 K were detected. The plateau formation is sample quality sensitive and composition-dependent. It was experimentally found that even with a slow cooling rate, several samples were cracked. Depending on the sample damage, the additional internal scattering process leads to the k(T) plateau suppression. The observed k(T) temperature dependence is similar to the glassy ceramics-like behavior. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1063777X
Volume :
49
Issue :
5
Database :
Complementary Index
Journal :
Low Temperature Physics
Publication Type :
Academic Journal
Accession number :
164008603
Full Text :
https://doi.org/10.1063/10.0017815