DOI: 10.1063/1.471117. The anomalous Debye–Waller factor and the fragility of glasses

The anomalous Debye–Waller factor and the fragility of glasses

10.1063/1.471117

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The correlation between the magnitude of the Debye–Waller anomaly and the temperature dependence of the relaxation time and viscosity of glass-forming liquids (i.e., their fragility) is investigated using the coupling model of relaxation. The correlation is shown to be a natural consequence of the relationship between the noncooperative and intermolecularly cooperative relaxation times of the model. Specifically, the deviation of the mean squared displacement from a linear temperature dependency increases as the fragility (in the Angell sense) of the glass-forming liquid increases because more fragile glasses exhibit substantially more short-time, noncooperative relaxation. This latter fact arises from their shorter noncooperative relaxation times, as deduced from the coupling model.

Bibliography

Roland, C. M., & Ngai, K. L. (1996). The anomalous DebyeâWaller factor and the fragility of glasses. The Journal of Chemical Physics, 104(8), 2967â2970.

Authors 2

C. M. Roland (first)
K. L. Ngai (additional)

References 29 Referenced 56

{'key': '2024020611202358200_r1'}
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Dates

Type	When
Created	23 years ago (July 26, 2002, 8:15 a.m.)
Deposited	1 year, 6 months ago (Feb. 6, 2024, 6:52 a.m.)
Indexed	2 months, 3 weeks ago (May 26, 2025, 3:04 a.m.)
Issued	29 years, 5 months ago (Feb. 22, 1996)
Published	29 years, 5 months ago (Feb. 22, 1996)
Published Print	29 years, 5 months ago (Feb. 22, 1996)

Funders 0

None

BibTeX

@article{Roland_1996, title={The anomalous Debye–Waller factor and the fragility of glasses}, volume={104}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.471117}, DOI={10.1063/1.471117}, number={8}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Roland, C. M. and Ngai, K. L.}, year={1996}, month=feb, pages={2967–2970} }

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