Temperature Dependence of the Electrical Resistivity and Thermoelectric Power of Rare Earth Substituted Cu – Cd ferrite | ||||
Egyptian Journal of Solids | ||||
Article 1, Volume 26, Issue 2, 2003, Page 113-121 PDF (367.26 K) | ||||
DOI: 10.21608/ejs.2003.150021 | ||||
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Abstract | ||||
Copper-cadmium ferrite substituted with different rare earth ions R (R= La,Sm, Gd and Dy) are investigated. The temperature dependence of the electrical resistivity (ρ) and thermoelectric power (α) are measured and hence the mobility is calculated. The electrical resistivity is increased with increasing the ionic radius of samples substituted with R = Dy, Gd and Sm while it decreased in case La substituted sample. The thermoelectric power is found to be temperature independent. The behavior of ρ, α and the values of the activation energy of the resistivity Eρ support the small polaron hopping conduction mechanism. | ||||
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