Skip to main content

Bulk magnetic properties of Co-Zn ferrites prepared by the co-precipitation method


The alternating current (a.c.) susceptibility versus temperature and magnetization measurements are reported for the disordered spinel ferrite system Zn x Co1-x Fe2 O4 prepared by a wet chemical method before and after high temperature annealing. The low field a.c. susceptibility measurements indicate that the low temperature synthesis of wet prepared Co-Zn ferrites aids the formation of spin-clusters and thereby increases the magnetic inhomogeneity. The X-ray analysis shows that the samples are single phase spinels and the variation of lattice constant with zinc concentration deviates from Vegard's law [1]. The high temperature annealing changes the wet prepared ferrites into the ordered magnetic structure of the ceramic ferrites.

This is a preview of subscription content, access via your institution.


  1. 1.

    C. G. Whinfreg, D. W. Eckart andA. Tauber,J. Amer. Chem. Soc. 82 (1960) 2695.

    Google Scholar 

  2. 2.

    T. Takada andM. Kiyama, in Proceedings of the International Conference on Ferrites, Japan 1970 pp. 69–71.

  3. 3.

    T. Yamaguchi andT. Nomura,ibid., Japan, 1980, pp. 46–9.

  4. 4.

    P. J. Slick in “Ferromagnetic Materials” Vol. 2, edited by E. P. Wohlfarth (Amsterdam 1980) pp. 204–8.

  5. 5.

    N. Burriesci, F. Garbassi andS. Pizzini,J. Magn. Magn. Mat. 7 (1978) 52.

    Google Scholar 

  6. 6.

    R. G. Kulkarni andH. H. Joshi,J. Solid State Chem. 64 (1986).

  7. 7.

    M. Petrera, A. Gennaro andN. Burriesci,J. Mater. Sci. 17 (1982) 429.

    Google Scholar 

  8. 8.

    G. A. Petitt andD. W. Forester,Phys. Rev. B4 (1971) 3912.

    Google Scholar 

  9. 9.

    O. S. Josyulu andJ. Sobhanadri,Indian J. Pure Appl. Phys. 20 (1982) 404.

    Google Scholar 

  10. 10.

    S. C. Bhargava andP. K. Iyenger,Phys. Status Solidi B53 (1972) 359.

    Google Scholar 

  11. 11.

    H. Robbins in Proceedings on the International Conference on Ferrites, Japan, 1980, pp. 7.

  12. 12.

    C. Radhakrishnamurthy, S. D. Likhite andP. W. Sahasrabudhe,Proc. Indian Acad. Sci. A87 (1978) 245.

    Google Scholar 

  13. 13.

    D. C. Khan, M. Misra andA. R. Das,J. Appl. Phys. 53 (1982) 2772.

    Google Scholar 

  14. 14.

    L. Neel,Ann. Phys. 3 (1948) 137.

    Google Scholar 

  15. 15.

    Y. Yafet andC. Kittel,Phys. Rev. 87 (1952) 290.

    Google Scholar 

  16. 16.

    C. Radhakrishnamurthy andS. D. Likhite,Earth. Plane. Sci. Lett. 7 (1970) 389.

    Google Scholar 

  17. 17.

    C. P. Bean,J. Appl. Phys. 26 (1955) 1981.

    Google Scholar 

Download references

Author information



Rights and permissions

Reprints and Permissions

About this article

Cite this article

Pandya, P.B., Joshi, H.H. & Kulkarni, R.G. Bulk magnetic properties of Co-Zn ferrites prepared by the co-precipitation method. J Mater Sci 26, 5509–5512 (1991).

Download citation


  • Ferrite
  • Zinc Concentration
  • High Temperature Annealing
  • Phase Spinel
  • Magnetic Inhomogeneity