| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1482266 | Journal of Non-Crystalline Solids | 2011 | 7 Pages |
Abstract
In the present work we present the preparation of 20A2O-30WO3-10Nb2O5-40P2O5 (A = Li, Na) transparent glasses. These glasses were heat-treated in air, at 550 °C and 650 °C for 4 h. The structure of the obtained samples was studied by X-ray powder diffraction (XRD) and Raman spectroscopy and the morphology by scanning electron microscopy (SEM). The dc (Ïdc), ac (Ïac) conductivity and dielectric spectroscopy measurements were performed in the function of the temperature and were related with the structural changes of the glass structures.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M.A. Valente, L. Bih, M.P.F. Graça,