Medium-range order in glasses: Comparison of Raman and diffraction measurements
- 7 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (10) , 1540-1543
- https://doi.org/10.1103/physrevlett.69.1540
Abstract
The correlation lengths of vitreous structures estimated from the low-frequency (boson) peak in Raman spectra and from the width of the first sharp diffraction peak are compared. This first comparison shows that the two estimates, which are based on dynamic and static properties, respectively, are in good quantitative agreement. The present result supports the concepts that (a) a decisive scale for structural order in glasses is ∼10 Å, and (b) the low-frequency excitations are defined by the characteristic length in vitreous structures.Keywords
This publication has 24 references indexed in Scilit:
- Change in dielectric constant along and perpendicular to induced strain in a supercooled liquid and in amorphous mediaJournal of Physics: Condensed Matter, 1991
- Low-frequency Raman-scattering study of the liquid-glass transition in aqueous lithium chloride solutionsPhysical Review A, 1991
- Vibrational dynamics and the structure of glassesJournal of Physics: Condensed Matter, 1990
- Low-frequency dynamics in superionic borate glasses by coupled Raman and inelastic neutron scatteringPhysical Review B, 1990
- Universal Form of the Low-Energy (2 to 10 meV) Vibrational Spectrum of GlassesEurophysics Letters, 1990
- Atomic correlations and intermediate-range order in molten and amorphousPhysical Review Letters, 1989
- Evidence of anomalous intermediate-range ordering in superionic borate glasses from neutron diffractionPhysical Review B, 1989
- Phonon localization in glassesPhysical Review B, 1986
- Inelastic light scattering in superionic glassesPhysical Review B, 1984
- Low-frequency inelastic light scattering from chalcogenide glasses and alloysPhysical Review B, 1977