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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 effect of cluster dynamics on the ot-relaxation in supercooled liquids
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The effect of cluster dynamics on the ot-relaxation in supercooled liquids

机译：团簇动力学对过冷液体中ot松弛的影响

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摘要

The dielectric relaxation in a supercooled liquid is analyzed in a model in which the liquid is composed of slowly moving molecules within clusters and fast ones between them. If the dielectric alpha-relaxation of molecules inside a cluster is described by a stretched exponential function then the cluster dynamics, with molecules leaving and entering the clusters, can lead to the relaxation of the system's polarization being described by a stretched exponential function with a larger stretching exponent, that depends on the rate at which the molecules leave the clusters. The implications of this for time-temperature superposition and other properties of supercooled liquids are discussed. (c) 2005 Elsevier B.V. All rights reserved.
机译：在模型中分析了过冷液体中的介电弛豫，该模型中的液体由簇中缓慢移动的分子和簇之间的快速分子组成。如果簇内分子的介电α弛豫是通过拉伸的指数函数来描述的，那么分子离开和进入簇的团簇动力学可以导致系统极化的松弛，而拉伸的指数函数具有更大的拉伸指数，取决于分子离开簇的速率。讨论了这对时间-温度叠加和过冷液体其他特性的影响。 （c）2005 Elsevier B.V.保留所有权利。

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