Vibrations and Heat Transfer in Glasses: The Role Played by Disorder
Amorphous materials are also distinguished from crystals by their thermal properties. The structural disorder seems to be responsible both for a significant increase in heat capacity compared to crystals of the same composition, but also for a significant decrease in thermal conductivity. The temper...
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Académie des sciences
2023-11-01
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| Series: | Comptes Rendus. Physique |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.162/ |
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| author | Tanguy, Anne |
| author_facet | Tanguy, Anne |
| author_sort | Tanguy, Anne |
| collection | DOAJ |
| description | Amorphous materials are also distinguished from crystals by their thermal properties. The structural disorder seems to be responsible both for a significant increase in heat capacity compared to crystals of the same composition, but also for a significant decrease in thermal conductivity. The temperature dependence of thermal conductivity, unusual for common interpretations of solid-state physics, gave rise to a lot of debates. We review in this article different interpretations of thermal conductivity in amorphous materials. We show finally that the temperature dependence of thermal conductivity in dielectric materials can be understood by relating it to the disorder-dependent harmonic vibrational eigenmodes. |
| format | Article |
| id | doaj-art-eca1f8c563b2491098151003f0c5419d |
| institution | Kabale University |
| issn | 1878-1535 |
| language | English |
| publishDate | 2023-11-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Physique |
| spelling | doaj-art-eca1f8c563b2491098151003f0c5419d2025-02-07T13:52:26ZengAcadémie des sciencesComptes Rendus. Physique1878-15352023-11-0124S1739710.5802/crphys.16210.5802/crphys.162Vibrations and Heat Transfer in Glasses: The Role Played by DisorderTanguy, Anne0ONERA, University Paris-Saclay, Chemin de la Hunière, BP 80100, Palaiseau, 92123, France; Univ. Lyon, INSA Lyon, CNRS, LaMCoS, UMR5259, Villeurbanne, 69621, FranceAmorphous materials are also distinguished from crystals by their thermal properties. The structural disorder seems to be responsible both for a significant increase in heat capacity compared to crystals of the same composition, but also for a significant decrease in thermal conductivity. The temperature dependence of thermal conductivity, unusual for common interpretations of solid-state physics, gave rise to a lot of debates. We review in this article different interpretations of thermal conductivity in amorphous materials. We show finally that the temperature dependence of thermal conductivity in dielectric materials can be understood by relating it to the disorder-dependent harmonic vibrational eigenmodes.https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.162/amorphous materialsglassesacoustic attenuationthermal Propertiesthermo-mechanical behaviourplasticity |
| spellingShingle | Tanguy, Anne Vibrations and Heat Transfer in Glasses: The Role Played by Disorder Comptes Rendus. Physique amorphous materials glasses acoustic attenuation thermal Properties thermo-mechanical behaviour plasticity |
| title | Vibrations and Heat Transfer in Glasses: The Role Played by Disorder |
| title_full | Vibrations and Heat Transfer in Glasses: The Role Played by Disorder |
| title_fullStr | Vibrations and Heat Transfer in Glasses: The Role Played by Disorder |
| title_full_unstemmed | Vibrations and Heat Transfer in Glasses: The Role Played by Disorder |
| title_short | Vibrations and Heat Transfer in Glasses: The Role Played by Disorder |
| title_sort | vibrations and heat transfer in glasses the role played by disorder |
| topic | amorphous materials glasses acoustic attenuation thermal Properties thermo-mechanical behaviour plasticity |
| url | https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.162/ |
| work_keys_str_mv | AT tanguyanne vibrationsandheattransferinglassestheroleplayedbydisorder |