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| Article Name : | | | Investigation Of Role Of Wo Additive On Drift Mobility And 3 The Dc Electrical Resistivity Of Nicuzn Spinel Ferrite | | Author Name : | | | Datta Kakde, C.M.Kale ,A. A. Pandit C.M.Kale | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | GRT-1466 | | Article URL : | |  | Author Profile View PDF In browser | | Abstract : | | | The DC electrical resistivity was studied for Ni Cu Zn Fe O + x WO 0.3 0.2 0.5 2 4 3 samples (x= 0.00 wt. % to 1.00 wt. % in the steps of 0.25wt. % WO ) prepared by using 3 conventional ceramic technique. The DC electrical resistivity ρ, Curie temperature Tc and activation energies for electric conduction in ferromagnetic (Ef) and paramagnetic (Fp) region. The variation of logarithm of resistivity with reciprocal of temperature shows a definite kink near Curie temperature. The plot of resistivity obeys the Arrhenius relation. It has been found that the resistivity decreases with WO additives significantly. 3 The activation energy in paramagnetic region and ferrimagnetic region has been calculated from resistivity plot. It is observed that the activation energy in paramagnetic region is greater than in ferrimagnetic region. Drift mobility of all the samples has been calculated and it was observed that the samples having higher resistivity have low mobility. And also mobility decreases as Curie temperature decreases. | | Keywords : | | |
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