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arXiv 0712.2827cond-mat.soft
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玻璃形成液体的近似平方根时间弛豫

Approximate square-root-time relaxation in glass-forming liquids

Albena I. Nielsen, Tage Christensen, Bo Jakobsen, Kristine Niss, Niels Boye Olsen, Ranko Richert, Jeppe C. Dyre

摘要:

我们目前的数据为43玻璃形成的有机液体的介电弛豫,表明主要(α)松弛往往是接近平方根时间松弛。高频损耗的逆幂律描述应用得越好,平方根时间弛豫就越精确。这些发现表明,平方根时间松弛是通用的阿尔法过程,一旦一个共同的观点,但长期以来被认为是不正确的。只有具有非常大的介电损耗的液体通过具有一贯较窄的损耗峰而偏离该图。作为对主流观点的进一步挑战,我们发现具有精确平方根时间弛豫的液体涵盖了广泛的脆弱性。

英文摘要:

We present data for the dielectric relaxation of 43 glass-forming organic liquids, showing that the primary (alpha) relaxation is often close to square-root-time relaxation. The better an inverse power-law description of the high-frequency loss applies, the more accurately is square-root-time relaxation obeyed. These findings suggest that square-root-time relaxation is generic to the alpha process, once a common view, but since long believed to be incorrect. Only liquids with very large dielectric losses deviate from this picture by having consistently narrower loss peaks. As a further challenge to the prevailing opinion, we find that liquids with accurate square-root-time relaxation cover a wide range of fragilities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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