Journal of Electroceramics

, Volume 16, Issue 4, pp 357–361 | Cite as

Effect of La doping on structural, magnetic and microstructural properties of Ba1 − x La x Fe12O19 ceramics prepared by citrate combustion process

  • S. Ounnunkad
  • P. Winotai
  • S. Phanichphant
Section 1: Electroceramics


La-substituted M-type barium ferrites, Ba1 − x La x Fe12O19, with x = 0.00–0.30 were successfully prepared via a citrate combustion process. Properties of the ceramics were characterized by powder X-ray diffraction, vibrating sample magnetometry and scanning electron microscopy. XRD patterns revealed only magnetoplumbite structure without minor phases. With increasing the La substituted content, the saturation magnetization (M S ) was increased and reached to a maximum at x = 0.15 and then decreased but coercivity (H C ) was increased. SEM micrographs of the dense ceramics showed the hexagonal platelet shape at low La content and the irregular shape at high La content.


Barium ferrites Hysteresis loops Magnetization Coercivity 


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  1. 1.
    R.A. McCurrie, Ferromagnetic Materials: Structure and Properties (Academic Press, London, 1994), p. 155 & 234.Google Scholar
  2. 2.
    S.R. Janasi, D. Rodrigues, F.J.G. Landgraf, and M. Emura, IEEE Trans Magn., 36(5), 3327 (2000).CrossRefGoogle Scholar
  3. 3.
    M. Sugimoto, J. Am. Ceram. Soc., 82(2), 269 (1999).CrossRefGoogle Scholar
  4. 4.
    H. Kojima, in Fundamental Properties of Hexagonal Ferrites: Ferromagnetic Materials, edited by E.P. Wohlfarth (New York, North-Holland, 1982), p. 305.Google Scholar
  5. 5.
    M.R. Meshram, N.K. Agrawal, B. Sinha, and P.S. Misra, J. Magn. Magn. Mater., 271, 207 (2004).CrossRefGoogle Scholar
  6. 6.
    G.K. Thompson and B.J. Evans, J. Appl. Phys., 73(10), 6295 (1993).CrossRefGoogle Scholar
  7. 7.
    X. Liu, J. Wang, L.-M. Gan, and S.-C. Ng, J. Magn. Magn. Mater., 195, 452 (1999).CrossRefGoogle Scholar
  8. 8.
    G. Mendoza-Suárez, M.C. Cisneros-Morales, M.M. Cisneros-Guerrero, K.K. Jahal, H. Mancha-Molinar, O.E. Ayala-Valenzuela, and J.I. Escalante-García, Mater. Chem. Phys., 77, 796 (2002).CrossRefGoogle Scholar
  9. 9.
    H.-F. Yu and K.-C. Huang, J. Magn. Magn. Mater., 260, 455 (2003).CrossRefGoogle Scholar
  10. 10.
    S.R. Janasi, M. Emura, F.J.G. Landgraf, and D. Rodrigues, J. Magn. Magn. Mater., 238, 168 (2002).CrossRefGoogle Scholar
  11. 11.
    F. Wei, M. Lu, and Z. Yang, J. Magn. Magn. Mater., 191, 249 (1999).CrossRefGoogle Scholar
  12. 12.
    R.C. Pullar and A.K. Bhattachaya, Mater. Lett., 57, 537 (2002).CrossRefGoogle Scholar
  13. 13.
    P.C. Kuo, Y.D. Yao, and W.I. Tzang, J. Appl. Phys., 73(10), 6292 (1993).CrossRefGoogle Scholar
  14. 14.
    Y.-P. Fu, C.-H. Lin, and K.-Y. Pan, Jpn. J. Appl. Phys., 42(5A), 2681 (2003).CrossRefGoogle Scholar
  15. 15.
    J. Huang, H. Zhuang, and W. Li, J. Magn. Magn. Mater., 256, 390 (2003).CrossRefGoogle Scholar
  16. 16.
    Z. Yang, H.-X. Zeng, D.-H. Han, J.-Z. Liu, and S.-L. Geng, J. Magn. Magn. Mater., 115, 77 (1992).CrossRefGoogle Scholar
  17. 17.
    Y.J. Chen and M.H. Kryder, J. Appl. Phys., 79(8), 4878 (1996).CrossRefGoogle Scholar
  18. 18.
    R. Carey, P.A. Gago-Sandoval, D.M. Newman, and B.W.J. Thomas, J. Appl. Phys., 75(10), 6789 (1994).CrossRefGoogle Scholar
  19. 19.
    M. Gomi, J. Cho, and M. Abe, J. Appl. Phys., 82(10), 5126 (1997).CrossRefGoogle Scholar
  20. 20.
    S.E. Jacobo, W.G. Fano, and A.C. Razzitte, Physica B, 320, 261 (2002).CrossRefGoogle Scholar
  21. 21.
    R.N. Panda, J.C. Shih, and T.S. Chin, J. Magn. Magn. Mater., 257, 79 (2003).CrossRefGoogle Scholar
  22. 22.
    J.C. Corral-Huacuz and G. Mendoza-Suárez, J. Magn. Magn. Mater., 242–245, 430 (2002).CrossRefGoogle Scholar
  23. 23.
    Y.-W. Du, H.-X. Lu, Y.-C. Zhang, and T.-X. Wang, J. Magn. Magn. Mater., 31–34, 793 (1983).CrossRefGoogle Scholar
  24. 24.
    J.F. Wang, C.B. Ponton, and I.R. Harris, J. Magn. Magn. Mater., 242–245, 1464 (2002).CrossRefGoogle Scholar
  25. 25.
    R. Grössinger, C.T. Blanco, M. Küpferling, M. Müller, and G. Wiesinger, Physica B, 327, 202 (2003).CrossRefGoogle Scholar
  26. 26.
    X. Liu, W. Zhong, S. Yang, Z. Yu, B. Gu, and Y. Du, Phys. Stat. Sol. (a), 193(2), 314 (2002).CrossRefGoogle Scholar
  27. 27.
    B.D. Cullity, Introduction to Magnetic Materials (Addison-Wesley, Massachusetts, 1972), p. 347.Google Scholar
  28. 28.
    X. Liu, W. Zhong, S. Yang, Z. Yu, B. Gu, and Y. Du, J. Magn. Magn. Mater., 238, 207 (2002).CrossRefGoogle Scholar

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© Springer Science + Business Media, LLC 2006

Authors and Affiliations

  1. 1.Nanoscience Research Laboratory, Department of Chemistry, Faculty of ScienceChiang Mai UniversityChiang MaiThailand
  2. 2.Department of Chemistry, Faculty of ScienceMahidol UniversityBangkokThailand

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