Sound waves and other modes in the strong glassformer B2O3

L. Börjesson; U. Buchenau; A. J. Dianoux; D. Engberg; A. P. Sokolov; A. Wischnewski

doi:10.1016/S0921-4526(96)00995-7

Sound waves and other modes in the strong glassformer B₂O₃

L. Börjesson, U. Buchenau, A. J. Dianoux, D. Engberg, A. P. Sokolov, A. Wischnewski

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Inelastic neutron scattering spectra of the strong glassformer B₂O₃ show the existence of a crossover temperature T_c for the glass forming liquid, above which the fast dynamics becomes nearly temperature independent. In that interpretation one is forced to conclude that the crossover temperature is above the melting point (T_m = 725 K) in this substance. We have been able to unravel the eigenvectors of the motion from the Q dependence of the spectra. The comparison with the Debye expectation supports an interpretation of the boson peak as a crossover in the dynamics from sound waves to different kind of vibrations, possibly localized ones.

Original language	English
Pages (from-to)	383-385
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	234-236
DOIs	https://doi.org/10.1016/S0921-4526(96)00995-7
State	Published - Jun 2 1997
Externally published	Yes

Keywords

Coherent scattering
Glass transition
Phonon density of states
Time of flight

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10.1016/S0921-4526(96)00995-7

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title = "Sound waves and other modes in the strong glassformer B2O3",

abstract = "Inelastic neutron scattering spectra of the strong glassformer B2O3 show the existence of a crossover temperature Tc for the glass forming liquid, above which the fast dynamics becomes nearly temperature independent. In that interpretation one is forced to conclude that the crossover temperature is above the melting point (Tm = 725 K) in this substance. We have been able to unravel the eigenvectors of the motion from the Q dependence of the spectra. The comparison with the Debye expectation supports an interpretation of the boson peak as a crossover in the dynamics from sound waves to different kind of vibrations, possibly localized ones.",

keywords = "Coherent scattering, Glass transition, Phonon density of states, Time of flight",

author = "L. B{\"o}rjesson and U. Buchenau and Dianoux, {A. J.} and D. Engberg and Sokolov, {A. P.} and A. Wischnewski",

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T1 - Sound waves and other modes in the strong glassformer B2O3

AU - Börjesson, L.

AU - Buchenau, U.

AU - Dianoux, A. J.

AU - Engberg, D.

AU - Sokolov, A. P.

AU - Wischnewski, A.

PY - 1997/6/2

Y1 - 1997/6/2

N2 - Inelastic neutron scattering spectra of the strong glassformer B2O3 show the existence of a crossover temperature Tc for the glass forming liquid, above which the fast dynamics becomes nearly temperature independent. In that interpretation one is forced to conclude that the crossover temperature is above the melting point (Tm = 725 K) in this substance. We have been able to unravel the eigenvectors of the motion from the Q dependence of the spectra. The comparison with the Debye expectation supports an interpretation of the boson peak as a crossover in the dynamics from sound waves to different kind of vibrations, possibly localized ones.

AB - Inelastic neutron scattering spectra of the strong glassformer B2O3 show the existence of a crossover temperature Tc for the glass forming liquid, above which the fast dynamics becomes nearly temperature independent. In that interpretation one is forced to conclude that the crossover temperature is above the melting point (Tm = 725 K) in this substance. We have been able to unravel the eigenvectors of the motion from the Q dependence of the spectra. The comparison with the Debye expectation supports an interpretation of the boson peak as a crossover in the dynamics from sound waves to different kind of vibrations, possibly localized ones.

KW - Coherent scattering

KW - Glass transition

KW - Phonon density of states

KW - Time of flight

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DO - 10.1016/S0921-4526(96)00995-7

M3 - Article

AN - SCOPUS:0031548555

SN - 0921-4526

VL - 234-236

SP - 383

EP - 385

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

ER -

Sound waves and other modes in the strong glassformer B₂O₃

Abstract

Keywords

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