Structural and Dielectric Properties of Cux Zn1-x Fe2 O4 (x = 0.2, 0.6, 0.8) Nano Particles

Georgi, AD and Fernandes, BJ and Reddy, GS and Ramesh, KP and Mallikarjunaiah, KJ (2023) Structural and Dielectric Properties of Cux Zn1-x Fe2 O4 (x = 0.2, 0.6, 0.8) Nano Particles. In: Journal of Mines, Metals and Fuels, 71 (12). pp. 200-207.

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Abstract

Researchers widely investigate multi-ferrite nanoparticles due to their fascinating magnetic and electrical properties with satisfactory thermal and chemical stabilities. In the present work Cux Zn1-x Fe2 O4 (x = 0.2, 0.6, 0.8) were synthesized using the auto combustion method. The spinel structure of the prepared samples was verified using XRD. The compositional dependent dielectric and ac conductivity studies were performed using impedance spectroscopy technique. The dielectric properties, such as complex dielectric constant and impedance, have been studied as a function of frequency. Changes of dielectric loss tangent (tan δ) with the frequency have been studied to get information about the energy dispersed inside the materials. The ac conduction study, as a function of frequency, suggests the hopping conduction mechanism at the higher frequencies. From the complex impedance spectra (Nyquist plots or Cole-Cole plots), On the real axis, we identified a dispersion as opposed to a centered semicircle. This suggests a relaxation type other than Debye. The dielectric dispersion observed at lower frequencies can be explained using Koop�s phenomenological theory. Since many gases are released during mining and the investigated Cu2 Fe2 O4 is known to be an excellent gas sensor, this study helps to use it effectively in the mining sector. © 2023, Informatics Publishing Limited. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of Mines, Metals and Fuels
Publisher:	Informatics Publishing Limited
Additional Information:	The copyright for this article belongs to the publishers.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	17 Dec 2024 06:03
Last Modified:	17 Dec 2024 06:03
URI:	http://eprints.iisc.ac.in/id/eprint/87159

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