Disorder classification of the vibrational spectra of modern glasses

Pan Z, Benzine O, Sawamura S, Limbach R, Koike A, Bennett TD, Wilde G, Schirmacher W, Wondraczek L (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review B American Physical Society

Book Volume: 104

Article Number: A1

Journal Issue: 13

DOI: 10.1103/PhysRevB.104.134106

Abstract

Using the coherent-potential approximation in heterogeneous-elasticity theory with a log-normal distribution of elastic constants for the description of the Raman spectrum and the temperature dependence of the specific heat, we are able to reconstruct the vibrational density of states and characteristic descriptors of the elastic heterogeneity of a wide range of glassy materials. These descriptors are the nonaffine contribution to the shear modulus, the mean-square fluctuation of the local elasticity, and its correlation length. They enable a physical classification scheme for disorder in modern, industrially relevant glass materials. We apply our procedure to a broad range of real-world glass compositions, including metallic, oxide, chalcogenide, hybrid, and polymer glasses. Universal relationships between the descriptors on the one side, and the height and frequency position of the boson peak, the Poisson ratio and the liquid fragility index on the other side are established.

Authors with CRIS profile

Lothar Wondraczek

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Asahi Glass (AGC) / 旭硝子 JP Japan (JP) University of Cambridge GB United Kingdom (GB) Westfälische Wilhelms-Universität (WWU) Münster DE Germany (DE) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE)

How to cite

APA:

Pan, Z., Benzine, O., Sawamura, S., Limbach, R., Koike, A., Bennett, T.D.,... Wondraczek, L. (2021). Disorder classification of the vibrational spectra of modern glasses. Physical Review B, 104(13). https://doi.org/10.1103/PhysRevB.104.134106

MLA:

Pan, Zhiwen, et al. "Disorder classification of the vibrational spectra of modern glasses." Physical Review B 104.13 (2021).

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