Article (Scientific journals)
The dielectric relaxation behavior induced by sodium migration in the Na2CoSiO4 structure within a three-dimensional Co–O–Si framework
Trabelsi, Kawthar; Karoui, Karim; Mahmoud, Abdelfattah et al.
2020In RSC Advances, 10, p. 27456-27473
Peer Reviewed verified by ORBi
 

Files


Full Text
d0ra04912c(2).pdf
Publisher postprint (3.78 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Na2CoSiO4; co-precipitatio; dielectric relaxation
Abstract :
[en] The disodium cobalt(ii) orthosilicate material (NCS) has been synthesized using improved solid-state (NCS-SS) and co-precipitation (NCS-CP) methods of synthesis. The Rietveld refinement of the XRD pattern of Na2CoSiO4 has demonstrated an orthorhombic crystal system with the space groups Pna21 and Pbca for NCS-SS and NCS-CP respectively. The elemental mapping of microstructures by scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) showed the porous morphology and the homogenous particles of the Na2CoSiO4 powders. Their dielectric properties were measured in the frequency and temperature ranges of 0.1–106 Hz and 383–613 K respectively. Different dielectric relaxation phenomena associated with the Na+-ion migration through different paths were displayed in relation with the temperature and frequency. The decrease and increase in the dielectric properties were found to be dependent on the formation of short-range ordered structure formed after the migration of Na+-ions. In the present work, an attempt has been made to study the relation between the structural properties and the dielectric process. Thus, interesting insights into the transport behavior of Na+-ions in different chemical environments were obtained. This in turn provides an effective procedure to probe the relationship between the diffusion pathway of Na+-ions and the dielectric response.
Disciplines :
Chemistry
Author, co-author :
Trabelsi, Kawthar
Karoui, Karim
Mahmoud, Abdelfattah  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Bodart, Jérôme  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Boschini, Frédéric ;  Université de Liège - ULiège > Plateforme APTIS
Ben Rhaiem, Abdallah
Language :
English
Title :
The dielectric relaxation behavior induced by sodium migration in the Na2CoSiO4 structure within a three-dimensional Co–O–Si framework
Publication date :
22 July 2020
Journal title :
RSC Advances
eISSN :
2046-2069
Publisher :
The Royal Society of Chemistry
Volume :
10
Pages :
27456-27473
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 July 2020

Statistics


Number of views
81 (20 by ULiège)
Number of downloads
4 (4 by ULiège)

Scopus citations®
 
8
Scopus citations®
without self-citations
3
OpenCitations
 
3

Bibliography


Similar publications



Contact ORBi