Advertisement

Journal of Materials Science

, Volume 42, Issue 19, pp 8254–8261 | Cite as

Structural and electrical properties of zinc-substituted cobalt ferrite

  • Wafaa Bayoumi
Article

Abstract

Polycrystalline samples of Co1−xZnxFe2O4 with stoichiometric proportion (x) varying from 0.0 to 1.0 were prepared through the thermal decomposition of their respective oxalates. The samples were calcined at 1000 °C for 3 h and characterized using X-ray diffraction (XRD) and Mössbauer spectroscopy techniques. The study of the cation distribution using Mössbauer spectroscopy showed that the ions at the tetrahedral site moved to the octahedral site by the addition of zinc and that the system varied from an inverse to a normal spinel structure. The values of the lattice parameter, X-ray density, oxygen parameter, inversion factor and radii of tetrahedral and octahedral sites were calculated using X-ray diffraction data. The temperature dependence of the conductivity showed a definite kink, except for the ZnFe2O4 sample, which can be attributed to the ferromagnetic–paramagnetic transitions. The calculated activation energy in the paramagnetic region was found to be smaller than that in the ferromagnetic region.

Keywords

Ferrite Octahedral Site CoFe2O4 ZnFe2O4 Cation Distribution 

References

  1. 1.
    Murase T, Igarahi K, Sawai J, Nomura T (1999) ICF7. Bordeaux, FranceGoogle Scholar
  2. 2.
    Wacrenoborgh JC, Figucerido MO, Cabrol JMP, Pereiro LCJ (1994) J Sol State Chem 111:300CrossRefGoogle Scholar
  3. 3.
    Goldman A (1993) Modern ferrite technology. Marcel Dekker, New YorkGoogle Scholar
  4. 4.
    Trivedie BS, Janie NN, Joshi HH, Kulkarni RG (2000) J Mater Sci 3:5523CrossRefGoogle Scholar
  5. 5.
    Choni AA, Etyhhand AI, Mohamed AA (1980) Proc Int Conf Ferrites 5:216Google Scholar
  6. 6.
    Ramana Reddy AV, Ranga Mohan G, Boyanov BS, Ravinder D (1999) Mater Lett 39:153CrossRefGoogle Scholar
  7. 7.
    Duong GV, Turtelli RS, Hahn N, Linh DV, Reissner M, Michor H, Fidler J, Wiesinger G, Grossinger R (2006) J Magn Magn Mater 307:313CrossRefGoogle Scholar
  8. 8.
    Reddy AVR, Mohan GR, Ravinder D, Boyanov BS (1999) J Mater Sci 34:3169CrossRefGoogle Scholar
  9. 9.
    Gul IH, Abbasi AZ, Amin F, Anis-Ur-Rehman M, Maqsood A (in press) J Magn Magn MaterGoogle Scholar
  10. 10.
    Gabal MA, El-Bellihi AA, Ata-Allah SS (2003) Mater Chem Phys 81:84CrossRefGoogle Scholar
  11. 11.
    Grosse G (1992) Mos-90, version 2.2, 2nd edn. (Oskar-Maria-Graf-RRing), Munchen Google Scholar
  12. 12.
    Kumar KV, Ravinder D (2002) Mater Lett 52:166CrossRefGoogle Scholar
  13. 13.
    Gabal MA, El-Bellihi AA, El-Bahnasawy HH (2003) Mater Chem Phys 81:174CrossRefGoogle Scholar
  14. 14.
    George M, Nair SS, John AM, Joy PA, Anantharaman MR (2006) J Phys D: Appl Phys 39:900CrossRefGoogle Scholar
  15. 15.
    Wei QM, Li JB, Chen ZJ (2001) J Mater Sci 36:5115CrossRefGoogle Scholar
  16. 16.
    Cullity BD (1956) Elements of X-ray diffraction. Wesley Publishing Reading, MAGoogle Scholar
  17. 17.
    Kulusreshtha SK (1986) J Mater Sci 5:638Google Scholar
  18. 18.
    Smith J, Wijin HP (1959) Ferrites. Wiley, NYGoogle Scholar
  19. 19.
    Morrison SR (1977) The chemistry and physics of surface. Plenum Press, NYCrossRefGoogle Scholar
  20. 20.
    Irkin YP, Turov EA (1957) Sov Phys JETP 33:673Google Scholar
  21. 21.
    Kliger MI (1979) Phys Stat Sol B 79:9Google Scholar
  22. 22.
    Nikumbh AK, Nagawade AV, Tadke VB, Bakare PP (2001) J Mater Sci 36:653CrossRefGoogle Scholar
  23. 23.
    Wu CC, Krishanan SK, Marson TO (1981) J Sol State Chem 37:144CrossRefGoogle Scholar
  24. 24.
    Maxwell JC (1973) Electrical and magnetic. Oxford University Press, NYGoogle Scholar
  25. 25.
    Rabinkin IT, Novikova ZI (1960) Izv Acad Nauk, USSR Minsk 146Google Scholar
  26. 26.
    Fukuda Y, Nagata S, Echizenya K (2004) J Magn Magn Mater 279:325CrossRefGoogle Scholar
  27. 27.
    Anantharaman MR, Sindhu S, Jagatheesan S, Malini KA, Kurian P (1999) J Phys D: Appl Phys 32:1801CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Chemistry Department, Faculty of ScienceBenha UniversityBenhaEgypt

Personalised recommendations