Document Detail


Correlation between boson peak and anomalous elastic behavior in GeO(2) glass: An in situ Raman scattering study under high-pressure.
MedLine Citation:
PMID:  21702563     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We present low-frequency Raman scattering of pure GeO(2) glass under pressure up to 4 GPa, corresponding to an elastic transformation. Intensity variation and frequency shift of the boson peak are analysed and compared to the Debye model. The decrease of the boson peak intensity scaled by the Debye energy is correlated to the elastic anomalous properties under pressure up to 1.5 GPa, and interpreted as an elastic homogenisation process at the local scale. We emphasize similarities between a-GeO(2) and a-SiO(2) behavior under pressure, and compare our results to other experiments, numerical studies, and predictions of several models concerning amorphous systems.
Authors:
T Deschamps; C Martinet; D de Ligny; J L Bruneel; B Champagnon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  134     ISSN:  1089-7690     ISO Abbreviation:  J Chem Phys     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-06-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  234503     Citation Subset:  IM    
Affiliation:
Laboratoire de Physico-Chimie des Matériaux Luminescents, Domaine scientifique de la Doua, Université de Lyon, Université Lyon-1, UMR5620 CNRS, Ba^t. Kastler, 10 rue Ada Byron, 69622 Villeurbanne, FranceGroupe de Spectroscopie Moléculaire, Institut des Sciences Moléculaires, Université de Bordeaux1, CNRS UMR5255, 351 cours de la libération, F33405 Talence cedex, France.
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