Relationship between the boson peak and first sharp diffraction peak in glasses

Boson peak (BP) dynamics refers to the universal excitation in the terahertz region of glass. In this study, the universal dynamics of BP were quantitatively evaluated in various glassy materials based on the heterogeneous elasticity theory (HET), and the determinants of BP were successfully extracted. A strong correlation was observed between the maximum possible coarse-graining wavenumber, which is a determinant of the BP in the HET, and the first sharp diffraction peak (FSDP) wavenumber, which is a characteristic index of the medium-range order in glasses. The results indicate that the behaviour of BP in glass can be quantitatively understood in the following two steps. First, the FSDP representing the largest structural correlation in glass is dominantly used to determine the unit size of the elastic modulus heterogeneity, and second, the magnitude of the elastic modulus fluctuation is used to determine the frequency and intensity of the BP.

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Publication Details

Journal
Scientific Reports
Published
2025-03-20
DOI
https://doi.org/10.1038/s41598-025-94454-8
Citations
3
Primary Topic
Glass properties and applications
Type
article
Field-Weighted Citation Impact
2.18

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Relationship between the boson peak and first sharp diffraction peak in glasses

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Relationship between the boson peak and first sharp diffraction peak in glasses

Tatsuya Mori, Hiroyuki Hijiya, Hideyuki Mizuno, Atsunobu Masuno, Akitoshi Koreeda, Yasuhiro Fujii, Seiji Kojima, Yohei Y. Yamamoto, Hitoshi Kawaji, Shinji Kohara, Suguru Kitani, Soo Han Oh, Dan Kyotani
article en
3 citations

Abstract

Boson peak (BP) dynamics refers to the universal excitation in the terahertz region of glass. In this study, the universal dynamics of BP were quantitatively evaluated in various glassy materials based on the heterogeneous elasticity theory (HET), and the determinants of BP were successfully extracted. A strong correlation was observed between the maximum possible coarse-graining wavenumber, which is a determinant of the BP in the HET, and the first sharp diffraction peak (FSDP) wavenumber, which is a characteristic index of the medium-range order in glasses. The results indicate that the behaviour of BP in glass can be quantitatively understood in the following two steps. First, the FSDP representing the largest structural correlation in glass is dominantly used to determine the unit size of the elastic modulus heterogeneity, and second, the magnitude of the elastic modulus fluctuation is used to determine the frequency and intensity of the BP.

Scientific ReportsVol. 15(1)
Ritsumeikan University (JP), University of Tsukuba (JP), National Institute for Materials Science (JP), Kyoto University (JP), GC Corporation (Japan) (JP), The University of Tokyo (JP), The University of Osaka (JP)
Japan Society for the Promotion of Science
Openalex Percentile: Top 15%
Glass properties and applications
2.18
DOIOpen Access PDFOpenAlex
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