Effect of Ca-substitution on the Magnetic and Dielectric Properties of Mn-Zn Ferrites

Authors

  • M. M. Rahman Jahangirnagar University
  • P. K. Halder Jahangirnagar University
  • F. Ahmed Jahangirnagar University
  • T. Hossain Bangladesh Council of Scientific and Industrial Research
  • M. Rahaman Bangladesh Council of Scientific and Industrial Research

DOI:

https://doi.org/10.3329/jsr.v4i2.9752

Keywords:

Spinel ferrites, Sintering temperature, Initial permeability, Dielectric constant.

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.

 

Keywords: Spinel ferrites; Sintering temperature; Initial permeability; Dielectric constant.

© 2012 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.

doi: http://dx.doi.org/10.3329/jsr.v4i2.9752 J. Sci. Res. 4 (2), 297-306 (2012)

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Author Biographies

M. M. Rahman, Jahangirnagar University

Assistant Professor

Department of Physics

Jahangirnagar University

 

P. K. Halder, Jahangirnagar University

MS student

Department of Physics

F. Ahmed, Jahangirnagar University

Professor

Department of Physics

T. Hossain, Bangladesh Council of Scientific and Industrial Research

Chief Scientific Officer

Institute of Fuel Research and Development (IFRD)

M. Rahaman, Bangladesh Council of Scientific and Industrial Research

Senior Scientific Officer

Institute of Fuel Research and Development

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Published

2012-04-19

How to Cite

Rahman, M. M., Halder, P. K., Ahmed, F., Hossain, T., & Rahaman, M. (2012). Effect of Ca-substitution on the Magnetic and Dielectric Properties of Mn-Zn Ferrites. Journal of Scientific Research, 4(2), 297. https://doi.org/10.3329/jsr.v4i2.9752

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Section

Section A: Physical and Mathematical Sciences