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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >The defect diffusion model and the properties of glasses and liquids
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The defect diffusion model and the properties of glasses and liquids

机译：缺陷扩散模型及玻璃和液体的性质

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摘要

Several previously unexplained relaxation phenomena are interpreted quantitatively in terms of the defect diffusion model (DDM), These include widely different pre-exponentials, exponents and consequently fragility. In addition, the DDM is used to give a qualitative explanation of many properties that glasses and liquids exhibit. This includes interpretations of the glass transition (T-g), the liquid-liquid transition (T-B), the crystalline melting temperature (T-m), and the different values of the characteristic temperature, T-c, that some materials exhibit for different types of physical measurements. Next, qualitative explanations of the origin of secondary relaxations such as the excess wing and the beta relaxation are given. In addition, the boson peak is discussed in terms of the DDM. Finally, it is pointed out that in the DDM, universality is embodied in the defects i.e. free volume. Published by Elsevier B.V.
机译：根据缺陷扩散模型（DDM）定量解释了一些以前无法解释的松弛现象，其中包括相差很大的预指数，指数以及因此而引起的脆弱性。另外，DDM用于定性解释玻璃和液体所表现出的许多特性。这包括对玻璃化转变温度（T-g），液-液转变温度（T-B），晶体熔化温度（T-m）以及某些材料针对不同类型的物理测量所表现出的特征温度T-c的不同值的解释。接下来，对次要松弛的起源（如过剩的机翼和β松弛）进行定性解释。此外，玻色子峰将根据DDM进行讨论。最后，要指出的是，在DDM中，普遍性体现在缺陷即自由体积中。由Elsevier B.V.发布

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