PUMA
Istituto dei materiali per l'elettronica ed il magnetismo     
Orsingher L., Calicchio M., Carini Jr. G., Dal Maschio R., Fioretto D., Fontana A., Fumagalli P., Gilioli E., Mattarelli M., Moser E., Rossi F. Optical and spectroscopic characterization of permanently densified GeO2 glasses. In: Philosophical Magazine, vol. 88 (33-35) pp. 3907 - 3914. Taylor & Francis Group, 2008.
 
 
Abstract
(English)
Optical and spectroscopic characterization was carried out on densified vitreous germania glasses retrieved from pressures in the range 2-6 GPa. The density of the obtained glasses increased with applied pressure. Ultrasonic and Brillouin measurements revealed an increase of the longitudinal and shear sound velocity, in agreement with the hardening of the elastic medium. Raman measurements allowed the structural modification of the system to be studied as a function of its density and showed the evolution of the boson peak, which shifts towards higher frequencies and decreases in intensity.
DOI: 10.1080/14786430802247213
Subject boson peak; glass; Raman spectroscopy; ultrasonics


Icona documento 1) Download Document PDF


Icona documento Open access Icona documento Restricted Icona documento Private

 


Per ulteriori informazioni, contattare: Librarian http://puma.isti.cnr.it

Valid HTML 4.0 Transitional