%0 Journal Article
%T Universal behavior of internal friction in glasses below T : anharmonicity vs relaxation
%+ Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
%A Pelous, Jacques
%A Levelut, Claire
%Z accepted in Physical Review B
%< avec comité de lecture
%@ 1098-0121
%J Physical Review B: Condensed Matter and Materials Physics (1998-2015)
%I American Physical Society
%V 74
%P 224202 (
%8 2006-12-01
%D 2006
%Z cond-mat/0610693
%R 10.1103/PhysRevB.74.224202
%Z pacs 78.35.+c, 63.50+x, 63.20.Kr, 62.80.+f
%Z Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn]Journal articles
%X Comparison of the internal friction at hypersonic frequencies between a few K and the glass transition temperature Tg for various glasses brings out general features. At low temperature, internal friction is only weakly dependent on the material. At high temperature but still below Tg the internal friction for strong glasses shows a T-independent plateau in a very wide domain of temperature; in contrast, for fragile glass, a nearly linear variation of internal friction with T is observed. Anharmonicity appears dominant over thermally activated relaxational processes at high temperature.
%G English
%2 https://hal.science/hal-00109714/document
%2 https://hal.science/hal-00109714/file/levelut-revb3.pdf
%L hal-00109714
%U https://hal.science/hal-00109714
%~ CNRS
%~ UNIV-MONTP2
%~ LCVN
%~ UNIV-MONTPELLIER
%~ UM1-UM2