The structural and magnetic properties of barium ferrite powders prepared by the sol—gel method

The structural and magnetic properties of barium ferrite powders prepared by the sol—gel method

In this paper, M-type hexagonal barium ferrite powders are synthesized using the sol-gel method. A dried precursor heated in air is analyzed in the temperature range from 50 to 1200 [degrees]C using thermo-gravimetric analysis and differential scanning calorimetry. The effects of the additives and t...

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Veröffentlicht in:Chinese physics B 2012-01, Vol.21 (1), p.17501-1-017501-4
Hauptverfasser: Li, Jie, Zhang, Huai-Wu, Li, Yuan-Xun, Liu, Ying-Li, Ma, Yan-Bing
Format: Artikel
Sprache:eng
Schlagworte:
Additives
Barium compounds
Differential scanning calorimetry
Ferrites
Heat treatment
Magnetic properties
Precursors
Saturation (magnetic)
Sol gel process
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Zusammenfassung:In this paper, M-type hexagonal barium ferrite powders are synthesized using the sol-gel method. A dried precursor heated in air is analyzed in the temperature range from 50 to 1200 [degrees]C using thermo-gravimetric analysis and differential scanning calorimetry. The effects of the additives and the cacinating temperature on the magnetic properties are investigated, and the results show that single-phase barium ferrite powders can be formed. After heat-treating at 950 [degrees]C for 4h with 3 wt% additive, the coercivity and saturation magnetization are found to be 440 Oe and 57.9 emu/g, respectively.
ISSN:1674-1056
1741-4199
DOI:10.1088/1674-1056/21/1/017501