Depot Institutionnel de l'UMBB >
Publications Scientifiques >
Publications Internationales >
Veuillez utiliser cette adresse pour citer ce document :
http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7107
|
Titre: | γ-radiation, chemical synthesis of Ce3+ : Gd2Si2O7/SiO2 nanocomposite |
Auteur(s): | Ladjouzi, S. Guerbous, L. Bensuici, F. Bendiba, G. |
Mots-clés: | γ-irradiation Gd2Si2O7/SiO2 nanocomposite Ce3+ ions Structural Optical properties |
Date de publication: | 2021 |
Editeur: | Elsevier |
Collection/Numéro: | Radiation Physics and Chemistry/ Vol.189 (2021); |
Résumé: | In this work, Ce3+:Gd2Si2O7/SiO2(0.1 mol% Ce3+) nanocomposite powders were successfully synthesized via γ-irradiation, followed by thermal treatment at 900 °C for 2h.The radiations were carried out in a 60Co γ-source chamber at a dose up to 50 kGy. The structural, morphological and optical properties were investigated using X-ray diffraction analysis (XRD), Raman spectroscopy, Transmission electron microscopy (TEM) and Photoluminescence (PL) spectroscopy. XRD analysis reveals the formation of pure orthorhombic δ-Gd2Si2O7 Gadolinium pyrosilicate (δ-GPS)crystalline phase. The average particles size ranges from 30 to 50 nm when the γ-doses increase up to 50 kGy. Raman scattering shows that the intensity of Raman bands significantly increases with increasing of γ-doses. TEM observations show well dispersed spherical GPS nanoparticles within the silica glass host and confirmed the particles size and size distribution dependence on the γ-irradiation dose. Finally, photoluminescence measurements show that the emission intensity corresponding to 5d-4f transition of Ce3+increases with increasing of γ-irradiation dose due to high purity, better crystallinity and uniform distribution of Ce3+ions into GPS nanostructures |
URI/URL: | https://doi.org/10.1016/j.radphyschem.2021.109758 https://www.sciencedirect.com/science/article/abs/pii/S0969806X21004084 http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/7107 |
ISSN: | 0969806X |
Collection(s) : | Publications Internationales
|
Fichier(s) constituant ce document :
Il n'y a pas de fichiers associés à ce document.
|
Tous les documents dans DSpace sont protégés par copyright, avec tous droits réservés.
|