Effects of Li2O additive on structural, magnetic and electrical properties of Ni-Mg ferrite

Authors

  • Sheikh Mohi Uddin Rumy Department of Physics, University of Dhaka, Dhaka-1000
  • Mahabub Alam Bhuiyan Department of Physics, University of Dhaka, Dhaka-1000
  • MH Mesbah Ahmed Department of Physics, University of Dhaka, Dhaka-1000
  • Kazi Hanium Maria Department of Physics, University of Dhaka, Dhaka-1000
  • MA Hakim Materials Science Division, Atomic Energy Centre, Dhaka-1000
  • DK Saha Materials Science Division, Atomic Energy Centre, Dhaka-1000
  • Shamima Choudhury Department of Physics, University of Dhaka, Dhaka-1000

DOI:

https://doi.org/10.3329/jbas.v38i1.20198

Keywords:

Microstructure, Permeability, Curie temperature, Resistivity, Dielectric constant

Abstract

The effects of Li2O additives on the structural, magnetic and electrical properties of Ni0.5Mg0.5Fe2O4, prepared by conventional double sintering ceramic technique were investigated. The X-raydiffraction (XRD) pattern of the prepared samples showed single phase cubic spinel structure.Variation of lattice parameter has been observed with the variation of Li2O content. Theenhancement of bulk density has been observed for 2 mol% Li2O additive, but further increase inLi2O concentration, these values decrease. Enhancement of initial permeability (??) have beenobserved for the sample with 2 mol% Li2O additives while it decreases for higher concentration ofLi2O. The Curie temperature is found to decrease with the increase in Li2O additive. The resistivityincreases with increasing additive content and showed a significant dispersion with frequency,which is the normal ferromagnetic behavior. The dielectric constant (??) measurement showed thenormal dielectric behavior of spinel ferrite. Possible explanation for the observed features arediscussed.

DOI: http://dx.doi.org/10.3329/jbas.v38i1.20198

Journal of Bangladesh Academy of Sciences, Vol. 38, No. 1, 7-18, 2014

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Published

2014-08-27

How to Cite

Rumy, S. M. U., Bhuiyan, M. A., Ahmed, M. M., Maria, K. H., Hakim, M., Saha, D., & Choudhury, S. (2014). Effects of Li2O additive on structural, magnetic and electrical properties of Ni-Mg ferrite. Journal of Bangladesh Academy of Sciences, 38(1), 7–18. https://doi.org/10.3329/jbas.v38i1.20198

Issue

Vol. 38 No. 1 (2014)

Section

Articles