Temperature and Frequency Dependent Permeability of Spinel Type Li-Cd Ferrite

Authors

  • S Akhter Department of Physics, University of Chittagong, Chittagong- 4331, Bangladesh
  • DP Paul Department of Physics, University of Chittagong, Chittagong- 4331, Bangladesh
  • S Manjura Hoque Materials Science Division, Atomic Energy Centre, Dhaka- 1000, Bangladesh
  • MA Hakim Materials Science Division, Atomic Energy Centre, Dhaka- 1000, Bangladesh

DOI:

https://doi.org/10.3329/jbas.v33i2.4099

Keywords:

Lithium ferrite, Curie temperature, Initial permeability, Loss factor

Abstract

A series of Li-Cd ferrite samples of composition Li0.5-x/2CdxBi0.02Fe2.48-x/2O4 for x = 0.0 to 0.7 were prepared by conventional double sintering ceramic technique. From temperature dependent permeability, μ′ at T=TC indicates that the samples have high homogeneity according to Globus et al. The Curie temperature, TC is found to decrease with increasing Cd content. The sample with x=0.7 shows anomalous temperature dependent magnetic ordering. Initial permeability, μ′ and magnetic loss factor, tanδ have been investigated up to 13 MHz frequency range. Frequency dependent permeability increase except x = 0.7 with Cd content and also increase with sintering temperature. The magnetic loss factor is minimum at frequency around 1 MHz and rises sharply beyond that frequency.

Key words: Lithium ferrite, Curie temperature, Initial permeability, Loss factor.

DOI: 10.3329/jbas.v33i2.4099

Journal of Bangladesh Academy of Sciences, Vol. 33, No. 2, 159-166, 2009

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How to Cite

Akhter, S., Paul, D., Hoque, S. M., & Hakim, M. (2010). Temperature and Frequency Dependent Permeability of Spinel Type Li-Cd Ferrite. Journal of Bangladesh Academy of Sciences, 33(2), 159–166. https://doi.org/10.3329/jbas.v33i2.4099

Issue

Vol. 33 No. 2 (2009)

Section

Articles