Title
Effect of Fe2O3 concentration on the structure of the SiO2-Na2O-Al2O3-B2O 3 glass system
Date Issued
15 October 2011
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidad de Sao Paulo
Abstract
The structural properties of the glass matrix 40SiO2· 30Na2O·1Al2O3·(29 - x)B 2O3·xFe2O3 (mol%), 0.0 ≤ x ≤ 29.0 were studied by X-ray diffraction (XRD), differential thermal analysis (DTA) and Raman and infrared spectroscopy (FT-IR). XRD demonstrated Fe3O4 crystal formation for Fe2O3 concentrations of 29.0 mol%. DTA showed that glass transition and crystallization temperatures changed as a function of Fe2O 3 concentration and that these alterations were related to structural change in the glass system. Interesting aspects of Raman and FT-IR spectra were found, and this gives information about of the structure changes in Si-O-Si units of these glasses as a function of Fe2O3 concentration. © 2011 Elsevier B.V. All Rights Reserved.
Start page
140
End page
143
Volume
81
Issue
1
Language
English
OCDE Knowledge area
Óptica
Subjects
Scopus EID
2-s2.0-80052927444
PubMed ID
Source
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
ISSN of the container
13861425
Sponsor(s)
The authors acknowledge the financial support from the Brazilian agencies FAPEMIG and MCT/CNPq.
Sources of information:
Directorio de Producción Científica
Scopus