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- W2023159959 abstract "The dielectric spectra of most simple liquids are characterized by two relaxation processes: (i) the α-process, an intense, broad non-Debye relaxation with a non-Arrhenius temperature dependence and (ii) a β process, evident mainly below the glass transition and having nearly Arrhenius temperature behavior. However, the dielectric spectra of monoalcohols show three processes: two that resemble those of normal liquids and a third very intense Debye peak at lower frequencies, which is non-Arrhenius. Interestingly, this third process is not observed with other techniques such as light scattering and mechanical spectroscopy. There is a disagreement in the literature concerning the nature of this third relaxation. We investigated 2-ethyl-1-hexanol under high pressures (up to ∼1.4 GPa) over a broad range of temperatures. The Debye process, which is the slowest, is strongly affected by pressure. At higher pressures the relaxation times and intensities of the two non-Arrhenius relaxations become more nearly equal. In light of these results, we propose a modified interpretation of the relaxation processes and their underlying structures in monoalcohols." @default.
- W2023159959 created "2016-06-24" @default.
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- W2023159959 date "2010-04-12" @default.
- W2023159959 modified "2023-09-27" @default.
- W2023159959 title "Insights on the origin of the Debye process in monoalcohols from dielectric spectroscopy under extreme pressure conditions" @default.
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- W2023159959 doi "https://doi.org/10.1063/1.3374820" @default.
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