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2008 | 113 | 1 | 557-560
Article title

Optimization of Magnetic and Structural Properties of Sr Ferrite Prepared by Low-Temperature Combustion

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EN
Abstracts
EN
Fine strontium hexaferrite particles were prepared by the low temperature auto-combustion method. Aqueous solution of the corresponding metal salts and a combustible co-reactant compound - glycine were used as initial precursor. The resulting powders were calcined at various temperatures from 750°C up to 1100°C. The microstructure and magnetic properties were investigated by the Mössbauer spectroscopy, thermomagnetic analysis, scanning electron microscopy, and vibrating magnetometer. The particles of sizes less than 1 μm have monophasic hexagonal structure. Coercivity H_c≈400 kA/m, specific saturation polarization J_{s-m} ≈ 72×10^{-6} Tm^3 kg^{-1} and remanence polarization J_{s-r} ≈ 43×10^{-6} T m^3 kg^{-1} were achieved for the Sr ferrite annealed at 850°C for 6 h.
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Contributors
author
  • Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia
author
  • Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia
author
  • Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia
author
  • Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1136kz
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