Issue 56, 2019
From the journal:

RSC Advances

Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature

Mohsen Elain Hajlaoui,ab   Radhia Dhahri,a   Nessrine Hnainia,b   Aida Benchaabane, ORCID logo cd   Essebti Dhahria  and  Kamel Khirounie  

a Laboratoire Physique Appliquée, Faculté des Sciences, Université de Sfax, B. P. 1171, Sfax 3000, Tunisia
E-mail: elain.hajlaoui@istmt.utm.tn

b Laboratoire des Nanomatériaux et de Systèmes pour les Energies Renouvelables Centre de Recherches et des Technologies de l’Energie, Technopole Borj Cedria, BP 095 Hammam Lif, Tunisia

c Laboratoire Matériaux Avancés et Phénomènes Quantiques, Faculté des Sciences de Tunis El Manar, Campus Universitaire, Université Tunis El-Manar, 2092 Tunis, Tunisia

d Laboratoire de Physique de la Matière Condensée, UFR des Sciences d’Amiens, 80039 Amiens, France

e Laboratoire de Physique des Matériaux et des Nanomatériaux Appliqués à l'Environnement, Faculté des Sciences, Université de Gabès, 6079 Gabès, Tunisia

Abstract

Ni0.5Zn0.5Fe2O4 was prepared by the solid state reaction route at different temperatures. The dielectric properties of spinel ferrites were investigated in the frequency range 50 Hz–10 MHz and in the temperature range 300–420 K. Conductance is shown to increase with increasing frequency and temperature. Impedance analyses indicated that the relaxation phenomenon is strongly dependent on temperature and frequency. The impedance plots displayed both intra- and inter-granular contributions. Electrical equivalent circuit was proposed to explain the impedance results. The decrease of giant permittivity values with the increase in frequency proves the dispersion in the low frequency range and is showing the Maxwell–Wagner interfacial polarization.

Graphical abstract: Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature

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Article information

DOI
https://doi.org/10.1039/C9RA06589J
Article type
Paper
Submitted
21 Aug 2019
Accepted
02 Oct 2019
First published
10 Oct 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 32395-32402

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Conductivity and giant permittivity study of Zn0.5Ni0.5Fe2O4 spinel ferrite as a function of frequency and temperature

M. E. Hajlaoui, R. Dhahri, N. Hnainia, A. Benchaabane, E. Dhahri and K. Khirouni, RSC Adv., 2019, 9, 32395 DOI: 10.1039/C9RA06589J

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