Study on Structure and Magnetization of Spinel Ferrites

Abstract:

NiFe2O4, ZnFe2O4 and Ni0.64Zn0.36Fe2O4 were prepared by a chemical co-precipitation method. The positive ferrite ZnFe2O4 usually exhibits antiferromagnetism. The magnetization of Ni0.64Zn0.36Fe2O4 is much larger than that of NiFe2O4, which can be explained by doping with nonmagnetic cations or cations with weak magnetization in an inverse spinal ferrite if these cations occupy A sites, the magnetic moment of Fe3+ ions at the B sites would be oriented in the same direction. Experimental values found for the molecular magnetic moments of NiFe2O4 and Ni0.64Zn0.36Fe2O4 were lower than their theoretic values because surface structure defects resulted in a magnetic spin glass structure.

• Periodical: Advanced Materials Research (Volumes 152-153)
• Pages: 274-278
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.152-153.274
• Online since: October 2010
• Authors: Bian Fang Zhang, Zong Lin Yan
• Keywords: Antiferromagnetism, Ferromagnetic, Magnetic Moment

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