Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

We have measured the dielectric relaxation of the glass-former 1-propanol for temperatures between 65 and 350 K in the frequency range 10−2 to 2⋅1010 Hz and the photon correlation spectro-scopy decays near Tg. Attributing the strong Debye-type process of 1-propanol to distinct -OH group effects leaves two faster processes related to the structural relaxation which can be identified as α-relaxation and Johari–Goldstein type β-relaxation characteristic of nonhydrogen-bonding supercooled liquids. From the temperature dependent relaxation times τ(T) regarding the three distinct loss peaks, we can specify an α-β-bifurcation temperature Tβ, which coincides with characteristic qualitative changes in the τ(T) behavior, as also observed for ortho-terphenyl and other glass-forming liquids. This assignment is confirmed by the correla-tion times derived from incoherent quasielastic light-scattering data obtained from the simultaneously measured photon-correlation spectroscopy.

Bibliography

Hansen, C., Stickel, F., Berger, T., Richert, R., & Fischer, E. W. (1997). Dynamics of glass-forming liquids. III. Comparing the dielectric α- and β-relaxation of 1-propanol and o-terphenyl. The Journal of Chemical Physics, 107(4), 1086–1093.

Authors 5
  1. C. Hansen (first)
  2. F. Stickel (additional)
  3. T. Berger (additional)
  4. R. Richert (additional)
  5. E. W. Fischer (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 8:25 a.m.)
Deposited 1 year, 6 months ago (Feb. 6, 2024, 3:26 a.m.)
Indexed 1 day, 8 hours ago (Aug. 26, 2025, 2:31 a.m.)
Issued 28 years, 1 month ago (July 22, 1997)
Published 28 years, 1 month ago (July 22, 1997)
Published Print 28 years, 1 month ago (July 22, 1997)
Funders 0

None

@article{Hansen_1997, title={Dynamics of glass-forming liquids. III. Comparing the dielectric α- and β-relaxation of 1-propanol and o-terphenyl}, volume={107}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.474456}, DOI={10.1063/1.474456}, number={4}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Hansen, C. and Stickel, F. and Berger, T. and Richert, R. and Fischer, E. W.}, year={1997}, month=jul, pages={1086–1093} }