Low frequency Raman study of the Boson peak in a Tellurite-tungstate glass over temperature

Author(s)

Belancon, M. P. ^{[1, 2, 3]} ; Simon, G. ^[1]

Affiliation

^[1] Univ Pierre Marie Curie Paris VI, Lab Monaris, UMR 8233, Campus Jussieu, Pl Jussieu Tour 43-53, F-75252 Paris 05 - France

^[2] Univ Tecnol Fed Parana, Grp Fis Mat, Campus Pato Branco, Via Conhecimento Km 01, BR-85503390 Pato Branco, Parana - Brazil

^[3] Univ Estadual Campinas, Opt & Photon Res Ctr CEPOF, Rua Sergio Buarque de Holanda 777, BR-13083859 Campinas, SP - Brazil

• Document type: Journal article
• Source: Journal of Non-Crystalline Solids; v. 481, p. 295-298, FEB 1 2018.
• Web of Science Citations: 0

Abstract

In this work we present our findings performing low frequency Raman measurements over temperature in a tellurite-tungstate glass sample. The spectra could be fitted by using only two log-Gaussians, which suggests that quasi-elastic light scattering is negligible. The positions of the peaks have the same temperature behavior, being the higher frequency one refereed as Boson Peak in literature. The similar temperature behavior and depolarization ratio indicates that the peaks may have the same origin, being linked to the transversal and longitudinal vibrations of some unit. (AU)

• FAPESP's process: 08/57857-2 - Photonics for optical communications
• Grantee: Hugo Luis Fragnito
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 05/51689-2 - Optics and Photonics Research Center at UNICAMP
• Grantee: Hugo Luis Fragnito
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC