Abstract
Glasses with nominal compositions 11SrO · 5.5Fe2O3 · 4.5Al2O3 · 4B2O3 (1) and 15SrO · 5.5Fe2O3 · 4.5Al2O3 · 4B2O3 (2) were prepared by rapidly quenching oxide melts between counterrotating steel rollers. The glasses were then heat-treated in the range 650–950°C to produce glass-ceramic samples. The samples were characterized by X-ray diffraction, electron microscopy, and magnetic measurements. The phase composition of the glass-ceramics was determined, and their microstructure and magnetic properties were studied. The annealing temperature was shown to have a strong effect on the coercivity of the materials, which reaches 650 and 570 kA/m for compositions 1 and 2, respectively.
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Original Russian Text © L.A. Trusov, D.D. Zaitsev, P.E. Kazin, Yu.D. Tret’yakov, M. Jansen, 2009, published in Neorganicheskie Materialy, 2009, Vol. 45, No. 6, pp. 749–753.
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Trusov, L.A., Zaitsev, D.D., Kazin, P.E. et al. Preparation of magnetic composites through SrO-Fe2O3-Al2O3-B2O3 glass crystallization. Inorg Mater 45, 689–693 (2009). https://doi.org/10.1134/S0020168509060193
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DOI: https://doi.org/10.1134/S0020168509060193