Nanopowders of Y 2 O 3 pure, doped and codoped by Nd 3+ , Yb 3+ were obtained by sol-gel method. Solution with ethylene glycol was choosed as the proper solution where crystallites of powder with Nd and Yb dopants had the same size. Finally the one-phased compounds of Y 2 O 3 doped 0.5 at% Nd and 1,
Realization and characterization of Er and Yb glasses obtained by the sol-gel method
โ Scribed by D. Moutonnet; R. Chaplain; M. Gauneau; Y. Pelous; J.L. Rehspringer
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 473 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0921-5107
No coin nor oath required. For personal study only.
โฆ Synopsis
Glasses doped with erbium or ytterbium were realized using the sol-gel method, which allows a high rare earth concentration without segregation to be obtained. The realization of doped glasses by sol-gel is described. The glasses were analysed by secondary ion mass spectroscopy in order to compare the concentration in the initial liquid solution and in glass. No rare earth segregation seemed to occur. The optical absorption spectra show the typical peaks of the rare earth. In erbium-doped glasses a fluorescence can be observed at about 520 nm.
๐ SIMILAR VOLUMES
## Abstract Hydroxyapatite (HA)/glass mixtures have shown a faster bioactive behaviour than HA itself. On the other hand, the gelโcasting method is a simple and reproducible colloidal method to produce ceramic pieces with complex shapes. In this work, pieces of HA/glass mixtures were prepared by th
## Abstract The nanocrystalline powders of Y~4~Al~2~O~9~ (YAM) pure and doped by Nd, Yb and codoped by Nd and Yb were obtained via modified solโgel method. These powders were characterized by Xโray diffraction method, scanning electron microscopy and high resolution scanning electron microscopy, lu