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High Pressure Research
An International Journal
Volume 26, 2006 - Issue 4: Proceedings of The XXXXIV European High Pressure Research Group Meeting (EHPRG'44) Prague, 4–8 September, 2006
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Original Articles

Pressure Raman study of vibrational modes of glassy As2X3 (X: O, S)

K. S. Andrikopoulos Physics Division, School of Technology, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece; Foundation for Research and Technology Hellas–Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT), P.O. Box 1414, GR-26504, Patras, GreeceCorrespondence[email protected]
,
D. Christofilos Physics Division, School of Technology, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
,
G. A. Kourouklis Physics Division, School of Technology, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece
&
S. N. Yannopoulos Foundation for Research and Technology Hellas–Institute of Chemical Engineering and High Temperature Chemical Processes (FORTH/ICE-HT), P.O. Box 1414, GR-26504, Patras, Greece
Pages 401-406 | Received 30 May 2006, Published online: 02 May 2007
 
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Abstract

Pressure effects on the vibrational modes of As2O3 glass have been investigated with the aid of Raman scattering. Emphasis was put on both the intramolecular vibrational modes at high energies as well as the low-energy excitations (Boson peak) of the glass. The pressure dependence of the spectral features of Raman bands was found to be significantly different compared with the corresponding features of the structurally similar As2S3. Striking dissimilarities were also observed for the pressure dependence of the Boson peak in these two glasses.

Acknowledgements

K.S.A. acknowledges financial support from the project ‘PYTHAGORAS I’ funded by the Greek Ministry of National Education and Religion Affairs.

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