Gopalan, E Veena and Malini, KA and Kumar, D Sakthi and Yoshida, Yasuhiko and Al-Omari, IA and Saravanan, S and Anantharaman, MR (2009) On the dielectric dispersion and absorption in nanosized manganese zinc mixed ferrites. In: nternational Conference on Nanoscience and Nanotechnology, FEB 25-29, 2008, Melbourne, Australia.
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The temperature and frequency dependence of dielectric permittivity and dielectric loss of nanosized Mn1-xZnxFe2O4 (for x = 0, 0.2, 0.4, 0.6, 0.8, 1) were investigated. The impact of zinc substitution on the dielectric properties of the mixed ferrite is elucidated. Strong dielectric dispersion and broad relaxation were exhibited by Mn1-xZnxFe2O4. The variation of dielectric relaxation time with temperature suggests the involvement of multiple relaxation processes. Cole-Cole plots were employed as an effective tool for studying the observed phenomenon. The activation energies were calculated from relaxation peaks and Cole-Cole plots and found to be consistent with each other and indicative of a polaron conduction.
|Item Type:||Conference Paper|
|Additional Information:||Copyright of this article belongs to Institute of Physics.|
|Department/Centre:||Division of Mechanical Sciences > Mechanical Engineering|
|Date Deposited:||14 Dec 2009 10:43|
|Last Modified:||19 Sep 2010 05:29|
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