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

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

A series of polycrystalline M-type hexagonal ferrites with the formula BaFe sub(12-) sub(2x)Zn sub(x) Nb sub(x)O sub(19) (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 th...

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Veröffentlicht in:Materials sciences and applications 2014-03, Vol.5 (4), p.171-176
Hauptverfasser: Kanagesan, Samikannu, Hashim, Mansor, Jesurani, Sinnappan, Kalaivani, Thirunavukarasu, Ismail, Ismayadi
Format: Artikel
Sprache:eng
Schlagworte:
Barium hexaferrite
Ferrites
Magnetic properties
Microwave sintering
Saturation (magnetic)
Sol gel process
X-ray diffraction
Zinc
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Zusammenfassung:A series of polycrystalline M-type hexagonal ferrites with the formula BaFe sub(12-) sub(2x)Zn sub(x) Nb sub(x)O sub(19) (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.
ISSN:2153-117X
2153-1188
DOI:10.4236/msa.2014.54021