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Synthesis of ultrafine particles of barium ferrite by chemical coprecipitation

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Abstract

A new method to synthesize barium hexaferrite by chemical coprecipitation is described. A mixed precursor was precipitated by addition of a barium salt to a strongly alkaline ferrate (VI) solution. The precursor yielded barium hexaferrite on heating for 6 h at 800 °C; partial transformation was evident even at lower temperatures, from X-ray patterns and Mossbauer spectra. Scanning electron microscopy of the powders fired at 800 °C, showed that the particles were less than 0.5 μm in diameter.

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Authors and Affiliations

  1. Facultad de Ingenieria, Universidad de Buenos Aires, Argentina

    S. E JACOBO

  2. Instituto de Ciencias de Materiales de Barcelona, Bellaterra, Spain

    C DOMINGO-PASCUAL & R RODRIGUEZ-CLEMENTE

  3. Unidad de Actividad Quimica, Comision Nacional de Energia Atomica, Av. Libertador 8250, 1429, Buenos Aires

    M. A BLESA

  4. INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina

    M. A BLESA

Authors
  1. S. E JACOBO
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  2. C DOMINGO-PASCUAL
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  3. R RODRIGUEZ-CLEMENTE
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  4. M. A BLESA
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JACOBO, S.E., DOMINGO-PASCUAL, C., RODRIGUEZ-CLEMENTE, R. et al. Synthesis of ultrafine particles of barium ferrite by chemical coprecipitation. Journal of Materials Science 32, 1025–1028 (1997). https://doi.org/10.1023/A:1018582423406

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  • DOI: https://doi.org/10.1023/A:1018582423406

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