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M B Reddy, P.V. Reddy, Appl. Phys. (UK), 24, 975, 1991.

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Article

Dielectric Studies of Double Sintered Lithium Zinc Nickel Ferrite Prepared by Citrate Precursor Method

1Department of BS&H (Physics), NIT Manipur, Takyel, Imphal, India

2Department of Physics, Manipur University, Canchipur, Imphal, India


American Journal of Materials Science and Engineering. 2014, Vol. 2 No. 2, 24-27
DOI: 10.12691/ajmse-2-2-3
Copyright © 2014 Science and Education Publishing

Cite this paper:
Ibetombi Soibam, N Nilima, S Phanjoubam. Dielectric Studies of Double Sintered Lithium Zinc Nickel Ferrite Prepared by Citrate Precursor Method. American Journal of Materials Science and Engineering. 2014; 2(2):24-27. doi: 10.12691/ajmse-2-2-3.

Correspondence to: Ibetombi  Soibam, Department of BS&H (Physics), NIT Manipur, Takyel, Imphal, India. Email: ibetombi96@gmail.com

Abstract

Ni substituted Li-Zn ferrites with compositional formula Li0.4-0.5xZn0.2NixFe2.4-0.5xO4 where 0.02 ≤ x ≤ 0.1 in steps of 0.02 was fabricated by using citrate precursor method. X-ray diffraction was used to confirm the spinel phase. The dielectric constant was investigated as a function of composition, frequency and temperature. Room temperature dielectric constant showed a decrease with addition of Ni2+ ions. It was explained in terms of space charge polarization and koops two layer model. The variation in dielectric constant with frequency showed dispersion. Variation of dielectric constant with temperature was studied at different frequencies and an increase was observed as temperature rises. The possible mechanisms responsible for the above behavior are explained.

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