H1438013814

Structural and Electrical Characterization of Li-Zn Ferrites
M. Shahjahan¹, N. A. Ahmed², S. N. Rahman³, S. Islam⁴, N. Khatun⁵, M. S. Hossain^6
1M.Shahjahan, Scientific officer, Industrial Physics, Division Under BCSIR Laboratories, Dhaka Bangladesh.
²N.A. Ahmed, Principal Scientific officer, Industrial Physics, Division under BCSIR Laboratories, Dhaka Bangladesh.
³S.N. Rahman, Principal Scientific officer, Industrial Physics, Division Under BCSIR Laboratories, Dhaka Bangladesh.
⁴S.Islam, Senior Scientific officer, Industrial Physics, Division Under BCSIR Laboratories Dhaka Bangladesh.
⁵N.Khatun, Senior Scientific officer, Industrial Physics, Division Under BCSIR Laboratories Dhaka Bangladesh.
⁶M.S. Hossain, Senior Scientific officer, Industrial Physics, Division Under BCSIR Laboratories Dhaka Bangladesh.
Manuscript received on 11 January 2014 | Revised Manuscript received on 20 January 2014 | Manuscript Published on 30 January 2014 | PP: 48-52 | Volume-3 Issue-8, January 2014 | Retrieval Number: H1438013814/14©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Four ferrite samples of Li0.5xFe0.5xZn1-xFe2O4, where x= 0.6, 0.7, 0.8, 0.9 were prepared by conventional ceramic method. The dc electrical resistivity as a function of temperature has been studied and found to decrease with the increase in temperature. The Curie temperature (Tc) has been found to increase as the Zn content decreases from x=0.6 to x=0.8. But for the sample where x=0.9 the Curie temperature is less than that of the sample where x=0.8. The ac electrical conductivity (ac), dielectric constant (), the dielectric loss tangent (tan) and quality control factor (Q-factor) as a function of frequency have also been studied. The experimental results indicate that for the first three samples the ac electrical conductivity (ac) decreases with the increase in frequency up to 200 KHz and afterwards it increases with the increase in frequency. But for the sample where x=0.9 the ac conductivity (ac) increases with the increase in frequency. It has been found that with the increase in frequency the dielectric constant () and dielectric loss tangent (tan) decrease while the quality factor (Q-factor) and ac conductivity increases.
Keywords: Conventional Ceramic, Electrical Properties, Lithium Zinc, Surface Morphology.
Scope of the Article: Network Traffic Characterization and Measurements