WJCMP  Vol.3 No.3 , August 2013
Effect of Substitution of Al for Fe on Magnetic Properties and Particle Size of Ni-Co Nanoferrite
Abstract: Nanocrystalline Al doped nickel-cobalt ferrite [Ni0.6Co0.4Fe2-xAlxO4 (x = 0.0, 0.1, 0.3, 0.5 and 0.7)] powders have been synthesized by sol-gel auto-ignition method and the effect of non-magnetic aluminum content on the nanosize particles and magnetic properties has been studied. The X-ray diffraction (XRD) revealed that the powders obtained are single phase with inverse spinel structure. The calculated grain size from XRD data have been verified using transmission electron microscopy (TEM). TEM photograph shows that the powders consist of nano meter sized grain. The size of nanoparticles decreases as the non magnetic Al content increases. Magnetic hysteresis loops were measured at room temperature with maximum applied magnetic field of 20 KOe. As aluminum content increases, the measured magnetic hysteresis curves became narrow and saturation magnetization (Ms), and coercive force (Hc) decreased. The reduction of magnetization with the increase of aluminum content is caused by non-magnetic Al3+ ions and weakened interaction between sub-lattices.
Cite this paper: A. Amirabadizadeh and T. Amirabadi, "Effect of Substitution of Al for Fe on Magnetic Properties and Particle Size of Ni-Co Nanoferrite," World Journal of Condensed Matter Physics, Vol. 3 No. 3, 2013, pp. 131-135. doi: 10.4236/wjcmp.2013.33021.

[1]   V. A. M. Baebes, “Progress in Spinel Ferrite Research,” Elservier, Amesterdam, 1995.

[2]   A. Amirabadizadeh, H. Farsi, M. Dehghani and H. Arabi, “Effect of Substitution of Zn for Mn on Size and Magnetic Properties of Mn-Zn Ferrite,” Journal of Superconductivity and Novel Magnetism, Vol. 25, No. 8, 2012, pp. 2763-2765. doi:10.1007/s10948-01101259-5

[3]   Z. P. Niu, Y. Wang and F. S. Li, “Magnetic Properties of Nano Crystalline Co-Ni Ferrite,” Journal of Materials Science, Vol. 41, No. 17, 2006, pp. 5726-5730. doi:10.1007/S10853-006-0099-3

[4]   M. George, A. M. Mary, S. S. Nair, P. A. Joy and M. R. Anantharaman, “Finite Size Effects on the Structural and Magnetic Properties of Sol-Gel Synthesized NiFe2O4 Powder,” Journal of Magnetism and Magnetic Materials, Vol. 302, No. 1, 2006, pp. 190-195. doi:10.1016/j/jmmm.2005.08.029

[5]   S. Giri, S. Gamanta, S. Maji, S. Gongli and A. Bahaumik, “Magnetic Properties of α-Fe2O3 Nanoparticle Synthesized by a New Hydrothermal Method” Journal of Magnetism and Magnetic Materials, Vol. 288, No. 1-2, 2005, pp. 296-302. doi:10.1016/j/jmmm.2004.08.007

[6]   H. P. Kluy and L. E. Alexnder, “X-Ray Crystalline and Amorphous Materials,” Wily, New York, 1997.

[7]   ASTM 10-325 (Ni-ferrite) National Burear of Standsards.

[8]   E. Auzans, D. Zins, E. Blums and R. Massart, “Synthesis and Properties of Mn-Zn Ferrite Ferrofluids,” Journal of Materials Science, Vol. 34, No. 6, 1999, pp. 1253-1260.

[9]   S. S. Suryawanshi, V. V. Deshpande, V. B. Deshmukh, S. M. Kabur, N. D. Chaudhari and S. R. Sawanta, “XRD Analysis and Bulk Magnetic Properties of Al3+ Substituted Cu-Cd Ferrite,” Materials Chemistry and Physics, Vol. 59, No. 3, 1999, pp. 199-203. doi:10.1016/S0354-0584(99)00046-2

[10]   D. Mondelaers, G. Vanhoyland, H. Wallens and L. C.Van Pouke, “Synthesis of ZnO Nanopowder via an Aqueous Acetate-Citrate Gelation Method,” Materials Research Bulletin, Vol. 37, No. 5, 2002, pp. 901-914. doi:10.1016/S0025-5408(02)00727-4

[11]   V. Sepelak, D. Baabe, D. Mienert, D. Schultze, F. Krumeich, F. J. Litterst and K. D. Becker, “Evolution of Structure and Magnetic Properties with Annealing Temperature in Nanoscale High-Enrgy-Milled Nickel Ferrite,” Journal of Magnetism and Magnetic Materials, Vol. 257, No. 2-3, 2006, pp. 377-386. doi:10.1016/j/S0304-8853(02)01279-9

[12]   Luwreence Kumer, Manoranjan Kar, “Influence of Al3+ Ion Concentration of the Crystal Structure and Magnetic Anisotropy of Nanocrystalline Spinel Cobalt Ferrite,” Journal of Magnetism and Magnetic Materials, Vol. 323, No. 15, 2011, pp. 2042-2048. doi:10.1016/j/jmmm.2011.03.010