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Research Article | Open Access

Complex impedance and electric modulus studies of magnetic ceramic Ni0.27Cu0.10Zn0.63Fe2O4

M. BELAL HOSSENa( ), A. K. M. AKTHER HOSSAINb
Department of Physics, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
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Abstract

The electrical properties of Ni0.27Cu0.10Zn0.63Fe2O4 (NCZF) prepared from auto combustion synthesis of ferrite powders have been studied by impedance and modulus spectroscopy. We studied frequency and temperature dependencies of impedance and electric modulus of NCZF in a wide frequency range (20 Hz–5 MHz) at different measuring temperatures TSM (30–225 ℃). The complex impedance spectra clearly showed both grain and grain boundary effects on the electrical properties. The observed impedance spectra indicated that the magnitude of grain boundary resistance Rgb becomes more prominent compared to grain resistance Rb at room temperature, and with the increase in TSM, Rgb decreases faster than the intrinsic Rb. The frequency response of the imaginary part of impedance showed relaxation behavior at every TSM, and the relaxation frequency variation with TSM appeared to be of Arrhenius nature and the activation energy has been estimated to be 0.37 eV. A complex modulus spectrum was used to understand the mechanism of the electrical transport process, which indicated that a non-Debye type of conductivity relaxation characterizes this material.

Keywords

ferrimagnetic ceramicsimpedance spectroscopyelectric modulustemperature dependence

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Journal of Advanced Ceramics
Volume 4 Issue 3,
September 2015
Pages 217-225
DOI: 10.1007/s40145-015-0152-2
Cite this article:
HOSSEN MB, HOSSAIN AKMA. Complex impedance and electric modulus studies of magnetic ceramic Ni0.27Cu0.10Zn0.63Fe2O4. Journal of Advanced Ceramics, 2015, 4(3): 217-225. https://doi.org/10.1007/s40145-015-0152-2

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Received: 14 January 2015
Revised: 16 March 2015
Accepted: 08 April 2015
Published: 06 August 2015
© The author(s) 2015

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
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