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Synthesis of chemically coprecipitated hexagonal strontium-ferrite and its characterization

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Abstract

Highly uniform submicrometre size particles of hexagonal strontium ferrite (SrFe12O19) have been synthesized by chemical coprecipitation technique at pH ⋍ 13. Chemical coprecipitation technique has helped in bringing down the ferritization temperature from 1300 to 925° C which is revealed by DTA-TG and XRD studies. Reproducible uniform single domain particle size and its distribution has been observed by scanning electron microscopy. X-ray and Mossbauer studies have identified single phase ferrite with Fe3+ ions occupying the proper crystallographic sites. The performance parameters of the sintered isotropic strontium ferrite magnets have proved to be superior by about 20% over the ferrites prepared by conventional ceramic technique.

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Authors and Affiliations

  1. Physical Chemistry Division, National Chemical Laboratory, 008, Pune-411, India

    Shailaja Kulkarni, Jyotsna Shrotri, C. E. Deshpande & S. K. Date

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  1. Shailaja Kulkarni
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  2. Jyotsna Shrotri
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  3. C. E. Deshpande
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  4. S. K. Date
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Kulkarni, S., Shrotri, J., Deshpande, C.E. et al. Synthesis of chemically coprecipitated hexagonal strontium-ferrite and its characterization. J Mater Sci 24, 3739–3744 (1989). https://doi.org/10.1007/BF02385764

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  • DOI: https://doi.org/10.1007/BF02385764

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