1. Thermal conductivity of the AsxS100–x glass system at low temperatures.
- Author
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Baloh, Pavlo, Tkáč, Vladimír, Tarasenko, Róbert, Orendáč, Martin, Orendáčová, Alžbeta, Mitsa, Oleksandr, Mitsa, Vladimir, Holomb, Roman, and Feher, Alexander
- Subjects
THERMAL conductivity ,LOW temperatures ,GLASS ,CHALCOGENIDE glass - Abstract
The temperature dependence of the thermal conductivity k(T) of the As
x S100-x 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) ∼ T2 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]- Published
- 2023
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