DOI: 10.1063/1.3306562. Communications: Comparison of activation barriers for the Johari–Goldstein and alpha relaxations and its implications

Communications: Comparison of activation barriers for the Johari–Goldstein and alpha relaxations and its implications

10.1063/1.3306562

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The range of activation barrier heights for the Johari–Goldstein (JG) relaxation in glasses is shown to overlap the range for the main (alpha) relaxation, but to be on the average somewhat lower. This suggests the JG relaxation, like the alpha, involve transitions between megabasins in the energy landscape, and that the original conjecture by Johari and this author that the JG relaxation is an intrabasin one cannot be correct. A further possibility is that there is a closer connection of the JG relaxation to the phenomenon of dynamic heterogeneity in supercooled liquids than so far assumed.

Bibliography

Goldstein, M. (2010). Communications: Comparison of activation barriers for the JohariâGoldstein and alpha relaxations and its implications. The Journal of Chemical Physics, 132(4).

Authors 1

Martin Goldstein (first)

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Dates

Type	When
Created	15 years, 6 months ago (Feb. 1, 2010, 11:35 a.m.)
Deposited	2 years, 1 month ago (June 26, 2023, 1:23 a.m.)
Indexed	3 weeks, 2 days ago (July 30, 2025, 6:53 a.m.)
Issued	15 years, 6 months ago (Jan. 28, 2010)
Published	15 years, 6 months ago (Jan. 28, 2010)
Published Online	15 years, 6 months ago (Jan. 29, 2010)
Published Print	15 years, 6 months ago (Jan. 28, 2010)

Funders 0

None

BibTeX

@article{Goldstein_2010, title={Communications: Comparison of activation barriers for the Johari–Goldstein and alpha relaxations and its implications}, volume={132}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.3306562}, DOI={10.1063/1.3306562}, number={4}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Goldstein, Martin}, year={2010}, month=jan }

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