玻璃中的振动和热传递:无序所起的作用

IF 1.3 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Anne Tanguy
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引用次数: 1

摘要

非晶材料的热性能也与晶体不同。与相同成分的晶体相比,结构紊乱似乎既导致了热容的显著增加,也导致了导热系数的显著降低。热导率对温度的依赖,在固态物理的常见解释中是不寻常的,引起了很多争论。本文综述了对非晶材料热导率的不同解释。我们最后表明,电介质材料中导热系数的温度依赖性可以通过将其与无序相关的谐波振动本征模相关联来理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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 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.
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来源期刊
Comptes Rendus Physique
Comptes Rendus Physique 物理-天文与天体物理
CiteScore
2.80
自引率
0.00%
发文量
13
审稿时长
17.2 weeks
期刊介绍: The Comptes Rendus - Physique are an open acess and peer-reviewed electronic scientific journal publishing original research article. It is one of seven journals published by the Académie des sciences. Its objective is to enable researchers to quickly share their work with the international scientific community. The Comptes Rendus - Physique also publish journal articles, thematic issues and articles on the history of the Académie des sciences and its current scientific activity. From 2020 onwards, the journal''s policy is based on a diamond open access model: no fees are charged to authors to publish or to readers to access articles. Thus, articles are accessible immediately, free of charge and permanently after publication. The Comptes Rendus - Physique (8 issues per year) cover all fields of physics and astrophysics and propose dossiers. Thanks to this formula, readers of physics and astrophysics will find, in each issue, the presentation of a subject in particularly rapid development. The authors are chosen from among the most active researchers in the field and each file is coordinated by a guest editor, ensuring that the most recent and significant results are taken into account. In order to preserve the historical purpose of the Comptes Rendus, these issues also leave room for the usual notes and clarifications. The articles are written mainly in English.
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