Advanced Materials

Self-Propagating High Temperature Synthesis of Hexagonal Ferrites MFe12O19 (M = Sr, Ba)

Authors

  • Dr. Ivan P. Parkin,

    Corresponding author
    1. Department of Chemistry, University College London 2O Gordon Street, London, WCIH 0AJ (UK)
    • Department of Chemistry, University College London 2O Gordon Street, London, WCIH 0AJ (UK)
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  • Gareth Elwin,

    1. Department of Chemistry, University College London 2O Gordon Street, London, WCIH 0AJ (UK)
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  • DR. Luis Fernández Barquin,

    1. Department of Physics and Astronomy. University College London Gower Street, London, WCIE 6BT (UK)
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    • Departamento CITIMAC, Facultad Ciencias, Universidad de Cantabria, Santander 39005, Spain

  • Quang T. Bui,

    1. Department of Physics and Astronomy. University College London Gower Street, London, WCIE 6BT (UK)
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  • Dr. Quentin A. Pankhurst,

    Corresponding author
    1. Department of Physics and Astronomy. University College London Gower Street, London, WCIE 6BT (UK)
    • Department of Physics and Astronomy. University College London Gower Street, London, WCIE 6BT (UK)
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  • DR. Alexei V. Komarov,

    1. Institute of Structural Macrokinetics, Russian Academy of Sciences Chernogolovka, Moscow 142432 (Russia)
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  • Dr. Yuri G. Morozov

    1. Institute of Structural Macrokinetics, Russian Academy of Sciences Chernogolovka, Moscow 142432 (Russia)
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  • The authors thank the Royal Society for the provision of a FSU joint project grant. LFB thanks the Spanish Ministry of Science for financial support of his work in London. Mossbauer spectra were collected under the auspices of the Universiiy of London Intercollegiate Research Service.

Abstract

Hexagonal ferrites, materials widely used for permanent bard magnets, are currently commercially synthesized by multistep ceramic methods. Alternative routes are also multistep as well as being time-consuming and expensive. Teh self-propagating, high-temperature synthesis (SHS) presented here is convenient, quick, inexpensive, and single-step and it enables a range of ferrites, SrxBayFe12O19 (x + y equals; 1), to be prepared. The principles of SHS are briefly explained before the characterization of the reaction products, including their magnetic properties, is described.

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