Abstract
Thermoelectric power (α) and electrical resistivity (ρ) are reported for the system Cu1+x Sn x Fe2−2x O4 (wherex=0·05, 0·1, 0·15, 0·2 and 0·3) from room temperature to 800 K. The compositions withx=0·05 and 0·2 exhibitn-type conduction while the compositions withx=0·1 and 0·15 showp- ton-type conduction change after 423 K. The conduction at low temperature (i.e. < 400 K) is due to impurities, while at higher temperature (i.e. > 400 K), it is due to polaron. Hopping conduction phenomenon for the present system has been explained on the basis of localized model of electrons. Additional localization may arise due to Sn4+ + Fe2+ stable pairs at B-site and Cu1+ + Fe3+ pair at A-site.
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Eatah A I, Ghani A A, Shahat M E and Faramawy E El 1987Phys. Status Solidi (a) 104 793
Murthy K S R C, Mahanty S and Ghose J 1987Mater. Res. Bull. 22 1665
Nanba N and Kabayashi S 1978Jap. J. Appl. Phys. 17 1918
Otari S M, Kadam V B, Sawant S R and Patil S A 1990Indian J. Pure Appl. Phys. 28 248
Patil S A 1981Studies on physical properties of Cu x Fe 3−x O 4 ferrites, Ph.D. thesis, Shivaji University, Kolhapur
Patil B L, Sawant S R and Patil S A 1992Phys. Status Solidi (a) 133 147
Patil B L, Sawant S R and Patil S A 1993Czech. J. Phys. 43 87
Rezlescu N and Rezlescu E 1974Solid State Commun. 14 69
Vishwanathan B and Moorthy V R K (eds) 1990 inFerrite materials-Science and Technology (New Delhi: Narosa Publ. House)
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Patil, B.L., Sawant, S.R., Suryavanshi, S.S. et al. Conduction mechanism in Sn4+ substituted copper ferrite. Bull. Mater. Sci. 16, 267–271 (1993). https://doi.org/10.1007/BF02746036
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DOI: https://doi.org/10.1007/BF02746036