Details
| Original language | English |
|---|---|
| Article number | 025402 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 22 |
| Issue number | 2 |
| Publication status | Published - 10 Dec 2009 |
Abstract
The evolution of the boson peak with densification at medium densification rates (up to 2.3%) in silicate glasses was followed through heat capacity measurements and low frequency Raman scattering. It is shown that the decrease of the boson peak induced by densification does not conform to that expected from a continuous medium; rather it follows a two step behaviour. The comparison of the heat capacity data with the Raman data shows that the light-vibration coupling coefficient is almost unaffected in this densification regime. These results are discussed in relation to the inhomogeneity of the glass elastic network at the nanometre scale.
ASJC Scopus subject areas
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of Physics Condensed Matter, Vol. 22, No. 2, 025402, 10.12.2009.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Non-Debye normalization of the glass vibrational density of states in mildly densified silicate glasses
AU - Mantisi, B.
AU - Adichtchev, S.
AU - Sirotkin, S.
AU - Rafaelly, L.
AU - Wondraczek, L.
AU - Behrens, H.
AU - Marcenat, C.
AU - Surovtsev, N. V.
AU - Pillonnet, A.
AU - Duval, E.
AU - Champagnon, B.
AU - Mermet, A.
PY - 2009/12/10
Y1 - 2009/12/10
N2 - The evolution of the boson peak with densification at medium densification rates (up to 2.3%) in silicate glasses was followed through heat capacity measurements and low frequency Raman scattering. It is shown that the decrease of the boson peak induced by densification does not conform to that expected from a continuous medium; rather it follows a two step behaviour. The comparison of the heat capacity data with the Raman data shows that the light-vibration coupling coefficient is almost unaffected in this densification regime. These results are discussed in relation to the inhomogeneity of the glass elastic network at the nanometre scale.
AB - The evolution of the boson peak with densification at medium densification rates (up to 2.3%) in silicate glasses was followed through heat capacity measurements and low frequency Raman scattering. It is shown that the decrease of the boson peak induced by densification does not conform to that expected from a continuous medium; rather it follows a two step behaviour. The comparison of the heat capacity data with the Raman data shows that the light-vibration coupling coefficient is almost unaffected in this densification regime. These results are discussed in relation to the inhomogeneity of the glass elastic network at the nanometre scale.
UR - http://www.scopus.com/inward/record.url?scp=72249086382&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/22/2/025402
DO - 10.1088/0953-8984/22/2/025402
M3 - Article
AN - SCOPUS:72249086382
VL - 22
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 2
M1 - 025402
ER -