Titre :

Application of Magnetic Resonance Spectroscopies to the xZnO–(100 – x)NaPO3 Glass System: Glass Network Organization and Effect of Co2+ Doping

Auteur(s) :

Lahaye, M. [Auteur]
Doumert, B. [Auteur]
Revel, B. [Auteur]
Ben Tayeb, K. [Auteur]
Vezin, Herve [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Tricot, G. [Auteur]

Titre de la revue :

The Journal of Physical Chemistry C

Nom court de la revue :

J. Phys. Chem. C

Numéro :

119

Pagination :

17288-17297

Éditeur :

American Chemical Society (ACS)

Date de publication :

2015-07-17

ISSN :

1932-7447

Mot(s)-clé(s) en anglais :

Phosphates
Oxides
Amorphous materials
Doping
Ions

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]

Résumé en anglais : [en]

The xZnO–(100 – x)NaPO3 vitreous system is investigated in this contribution by advanced 1D/2D magnetic resonance spectroscopies. The glass network organization is analyzed in samples containing up to 42.5 mol % of ZnO by ...
Lire la suite >The xZnO–(100 – x)NaPO3 vitreous system is investigated in this contribution by advanced 1D/2D magnetic resonance spectroscopies. The glass network organization is analyzed in samples containing up to 42.5 mol % of ZnO by standard and correlation solid-state nuclear magnetic resonance: (i) 1D 31P MAS-, DQ-SQ-, and the recently developed DRENAR-NMR sequences are used to describe the local order structure and to quantify the 31P/31P interactions, (ii) the Na+ ions distribution is analyzed by 1D 23Na MAS NMR and 23Na(31P) REDOR NMR experiments, and (iii) 67Zn static NMR experiments are recorded at very high field (21.1 T) to monitor the evolution of the Zn coordination state all along the composition line. Altogether, the set of data offers a detailed analysis of the glass network structure and clarifies the two-domain evolution of the glass transition temperature. While Co2+ doping has been used for decades to reduce the T1 nuclear relaxation times, only sparse information about the optimum CoO amount and its chemical environment is available so far. New data on CoO-doped NaPO3 samples are presented in this contribution based on the first reported continuous wave and pulsed (HYSCORE) electron paramagnetic resonance investigation on that system.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Équipe(s) de recherche :

Propriétés magnéto structurales des matériaux (PMSM)

Date de dépôt :

2021-06-17T13:55:16Z
2021-06-24T14:18:21Z