Thermoelectric power studies of Ca–Co ferrites

Thermoelectric Power and Magnetic Permeability of Cd0.4Mn0.6CoxFe2-xO4 ferrite system

“…This observation along with the experimental evidence that for a given temperature difference ∆T, the change in charge carrier mobility ∆μd is larger than the change in charge carrier concentration ∆nwhich confirms that the predominant conduction mechanism is the hopping conduction rather than the band conduction. Similar results were observed [8,9].…”

“…X-ray diffraction and IR spectroscopy are important tools to characterize ferrite samples [4][5][6][7]. Many authors had investigated several mixed ferrites such as; Cu-Co ferrites [8], Ca-Co ferrites [9], Co-Ge ferrites [10], Co0.5Zn0.5Fe2O4 [11], Ba-Co-Ti ferrites [12], Cd-Mn-ferrites [13], erbium substituted Mn-Zn ferrites [14], Mn-Zn-Gd ferrites [15], Cd-Cu-ferrites [16] and Ni-Cd ferrites [17]. Up till now as far as the authors know there is no reports on investigation of the compositions Cd0.4Mn0.6CoxFe2-xO4 (x=0.0, 0.125, 0.25, 0.375, 0.5, 0.75 and 1.00).…”