Abstract
Electrical transport properties such as electrical conductivity (σ) and thermoelectric power (S) of polycrystalline Mn–Zn ferrites of various compositions have been investigated as a function of composition and temperature. Plots of log(σT) versus 103/T are increases with the increase of temperature and show transition near Curie temperature. The activation energy in the ferrimagnetic region is in general less than that in the paramagnetic region. The carrier concentration and mobility of charge carriers has been computed from values of electrical conductivity and Seebeck coefficient. An attempt is made to explain the conduction mechanism in these ferrites.
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