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Preparation of magnetic glass-ceramics through glass crystallization in the Na2O-SrO-Fe2O3-B2O3 system

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Abstract

Glasses with the nominal compositions SrFe12O19 + nNa2Sr2B4O9 (n = 4, 6, 8, 10) and SrFe12O19 + 6Na2Sr3B4O10 were prepared via rapid quenching of oxide melts and were then heat-treated between 500 and 800°C in order to produce glass-ceramics containing fine SrFe12O19 particles. The materials were characterized by x-ray diffraction, differential thermal analysis, electron microscopy, and magnetic measurements. The crystallization behavior of the glasses was investigated. The coercivity of the glass-ceramics was shown to increase with heat-treatment temperature, up to 486 kA/m. By dissolving the nonmagnetic matrix of the glass-ceramics with the nominal compositions SrFe12O19 + 6Na2Sr3B4O10 and SrFe12O19 + 4Na2Sr2B4O9, submicron-sized strontium hexaferrite particles were obtained.

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Authors and Affiliations

  1. Moscow State University, Vorob’evy gory 1, Moscow, 119992, Russia

    D. D. Zaitsev, E. A. Gravchikova, 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. E. A. Gravchikova
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  3. P. E. Kazin
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  4. A. V. Garshev
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  5. Yu. D. Tret’yakov
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  6. M. Jansen
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Original Russian Text © D.D. Zaitsev, E.A. Gravchikova, P.E. Kazin, A.V. Garshev, Yu.D. Tret’yakov, M. Jansen, 2006, published in Neorganicheskie Materialy, 2006, Vol. 42, No. 3, pp. 373–377.

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Zaitsev, D.D., Gravchikova, E.A., Kazin, P.E. et al. Preparation of magnetic glass-ceramics through glass crystallization in the Na2O-SrO-Fe2O3-B2O3 system. Inorg Mater 42, 326–330 (2006). https://doi.org/10.1134/S0020168506030198

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  • DOI: https://doi.org/10.1134/S0020168506030198

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