American Journal of Materials Science and Engineering
ISSN (Print): 2333-4665 ISSN (Online): 2333-4673 Website: http://www.sciepub.com/journal/ajmse Editor-in-chief: Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Materials Science and Engineering. 2014, 2(2), 24-27
DOI: 10.12691/ajmse-2-2-3
Open AccessArticle

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

Ibetombi Soibam1, , N Nilima2 and S Phanjoubam2

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

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

Pub. Date: July 27, 2014

Cite this paper:
Ibetombi Soibam, N Nilima and 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

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.

Keywords:
lithium ferrites citrate precursor XRD lattice parameter dielectric constant SEM

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