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Effect of Ca-substitution on the magnetic and dielectric properties of Mn-Zn ferrites

Rahaman, M., Hossain, T., Ahmed, F., Halder, P.K. and Rahman, M.M.ORCID: 0000-0002-6778-7931 (2012) Effect of Ca-substitution on the magnetic and dielectric properties of Mn-Zn ferrites. Journal of Scientific Research, 4 (2). pp. 297-306.

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Abstract

Spinel Mn-Zn ferrites with composition MnxZn0.4Ca0.6-2xFe2+xO4,where x = 0.10, 0.15, 0.20, 0.25 and 0.30 have been prepared by conventional ceramic technique sintered at 1300 °C for 4 hours. The influence of Ca-substitution on various properties of Mn-Zn ferrites have been studied in this work. Investigations were carried out by the measurements of Curie temperature, permeability, loss tangent, Q-factor, dielectric constant and AC resistivity of the samples. Curie temperature (Tc), the real part of initial permeability (µ´), loss tangent (tan ?), and AC resistivity have been found to be decreased while the Q-factor increases with the increase in Ca-content. The frequency characteristics of the dielectric constant and AC resistivity have been found to be decreased as the frequency increases. Maxwell-Wagner interfacial type of dielectric polarization was observed with the addition of Ca-content over the entire range of frequency considered.

Item Type: Journal Article
Publisher: JSR Publications
Copyright: © 2012 JSR Publications
URI: http://researchrepository.murdoch.edu.au/id/eprint/56354
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