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Synthesis and Magnetic Properties of SrO–Fe2O3–B2O3 Glass-Ceramics

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Abstract

Glasses with nominal compositions of SrFe12O19 + 8SrB2O4 (I) and SrFe12O19 + 12Sr2B2O5 (II) are prepared by rapid quenching from the liquid state and are converted to glass-ceramics containing fine magnetic particles of SrFe12O19 by heat treatment between 600 and 950°C. The materials are characterized by x-ray diffraction, differential thermal analysis, electron microscopy, and magnetic measurements. The phase transformations accompanying glass crystallization are identified. The glass composition and heat-treatment conditions are shown to influence the aspect ratio of the forming submicron-sized strontium hexaferrite particles. The strongest coercive fields reached in glass-ceramics I and II are 504 and 456 kA/m, respectively.

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Authors and Affiliations

  1. Moscow State University, Moscow, 119992, Russia

    D. D. Zaitsev, P. E. Kazin, A. V. Garshev & Yu. D. Tret'yakov

  2. Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart 80, Germany

    M. Jansen

Authors
  1. D. D. Zaitsev
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  2. P. E. Kazin
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  3. A. V. Garshev
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  4. Yu. D. Tret'yakov
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  5. M. Jansen
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Zaitsev, D.D., Kazin, P.E., Garshev, A.V. et al. Synthesis and Magnetic Properties of SrO–Fe2O3–B2O3 Glass-Ceramics. Inorganic Materials 40, 881–885 (2004). https://doi.org/10.1023/B:INMA.0000037938.15780.47

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  • DOI: https://doi.org/10.1023/B:INMA.0000037938.15780.47

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