Microwave sintering of Zn-Nb doped barium hexaferrite synthesized via sol-gel method

• Main Authors: Kanagesan, Samikannu, Hashim, Mansor, Jesurani, Sinnappan, Thirunavukarasu, Kalaivani, Ismail, Ismayadi
• Format: Article
• Language: English
• Published: Scientific Research Publishing 2014
• Online Access: http://psasir.upm.edu.my/id/eprint/52181/1/MSA_2014032515413287.pdf; http://psasir.upm.edu.my/id/eprint/52181/; http://www.scirp.org/journal/PaperInformation.aspx?PaperID=44143
• Institution: Universiti Putra Malaysia

A series of polycrystalline M-type hexagonal ferrites with the formula BaFe12-2xZnx NbxO19 (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.