ArticleScientific reports2018
Boson peak, heterogeneity and intermediate-range order in binary SiO
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Time-of-Flight Detection of Boson Peak in Volcanic Glass.Materials (Basel, Switzerland) · 2026Article
- Chemically Driven Nano-Elastic Heterogeneities Control Fragility in Volcanic Melts.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Spatial correlation at the boson peak frequency in amorphous materials.Nature communications · 2025Article
- YbSensors (Basel, Switzerland) · 2023Article
- Universality and Structural Implications of the Boson Peak in Proteins.Biophysical journal · 2019Article
- The quasi-low temperature behaviour of specific heat.Royal Society open science · 2019Article
- Local Deformation of Glasses is Mediated by Rigidity Fluctuation on Nanometer Scale.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2018Article
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Authors and funding
8 authors.
Funding
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Abstract
In binary aluminosilicate liquids and glasses, heterogeneity on intermediate length scale is a crucial factor for optical fiber performance, determining the lower limit of optical attenuation and Rayleigh scattering, but also clustering and precipitation of optically active dopants, for example, in the fabrication of high-power laser gain media. Here, we consider the low-frequency vibrational modes of such materials for assessing structural heterogeneity on molecular scale. We determine the vibrational density of states VDoS g(ω) using low-temperature heat capacity data. From correlation with low-frequency Raman spectroscopy, we obtain the Raman coupling coefficient. Both experiments allow for the extraction of the average dynamic correlation length as a function of alumina content. We find that this value decreases from about 3.9 nm to 3.3 nm when mildly increasing the alumina content from zero (vitreous silica) to 7 mol%. At the same time, the average inter-particle distance increases slightly due to the presence of oxygen tricluster species. In accordance with Loewensteinian dynamics, this proves that mild alumina doping increases structural homogeneity on molecular scale.
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Registered trials
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