Microwave Sintering of Zn-Nb Doped Barium Hexaferrite Synthesized via Sol-Gel Method

Samikannu Kanagesan, Mansor Hashim, Sinnappan Jesurani, Thirunavukarasu Kalaivani, Ismayadi Ismail

Center for Material Science and Nano Devices, Department of Physics, SRM University, Kattankulathur, India.
Department of Physics, Jeyaraj Annapackium College for Women, Periyakulam, India.
Materials Synthesis and Characterization Laboratory (MSCL), Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Serdang, Malaysia.

DOI: 10.4236/msa.2014.54021                

Abstract

A series of polycrystalline M-type hexagonal ferrites with the formula BaFe_12-2xZn_x Nb_xO₁₉ (x = 0.2, 0.4, 0.6, 0.8 mol%) have been synthesized by the sol-gel method. The composition and microstructure govern the magnetic properties of ferrites. The XRD analysis shows the formation of pure magneto plumbite phase without any other impurity phases. The Zn-Nb substitutions in barium hexaferrite have been confirmed through magnetic measurements. The results show that the magnetic properties are closely related to the distributions of Zn-Nb ions on the five crystallographic sites. The saturation magnetization and coercivity increase with increasing Zn-Nb concentration.

Keywords

Ceramics; Magnetic Materials; Surface Properties; Magnetic Properties

Conflicts of Interest

The authors declare no conflicts of interest.

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