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arXiv 1004.5145cond-mat.softcond-mat.dis-nn
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宽带介电谱研究B型玻璃形成体的高频动力学

High-frequency dynamics of type-B glass formers investigated by broadband dielectric spectroscopy

S. Kastner, M. Köhler, Y. Goncharov, P. Lunkenheimer, A. Loidl

摘要:

我们提出了宽带介电谱的结果,两个玻璃前体具有较强的Johari-Goldstein β-松弛。除了α-和β-弛豫动力学之外,光谱扩展到1 THz还可以揭示这类材料中快速β过程的信息。有明确的证据表明,一个快速的过程有助于在该地区的高频损耗最小值,这是分析的理想模式耦合理论。

英文摘要:

We present the results of broadband dielectric spectroscopy on two glass formers with strong Johari-Goldstein beta-relaxations. In addition to the alpha- and beta-relaxation dynamics, the extension of the spectra up to 1 THz also allows revealing information on the fast beta-process in this class of materials. There is clear evidence for a fast process contributing in the region of the high-frequency loss minimum, which is analyzed in terms of the idealized mode-coupling theory.

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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