Mechanochemical treatment of BaFe12O19 - Mossbauer investigation

E. Wu*, S. J. Campbell, W. A. Kaczmarek, M. Hofmann

*Corresponding author for this work

    Research output: Contribution to journalConference articlepeer-review

    3 Citations (Scopus)

    Abstract

    The structural and stoichiometric changes which occur on milling barium ferrite, BaFe12O19, powder in vacuum and air for up to 1000 h have been investigated by X-ray diffraction and Mossbauer effect spectroscopy (room temperature and 4.2 K). Mechanochemical treatment causes BaFe12O19 to transform progressively to disordered material, incorporating nanocrystalline and amorphous phases, with chemical reduction to haematite, α-Fe2O3. Superparamagnetic relaxation effects associated with the nanoscale particles are evident in the Mossbauer spectra.

    Original languageEnglish
    Pages (from-to)127-132
    Number of pages6
    JournalMaterials Science Forum
    Volume312
    DOIs
    Publication statusPublished - 1999
    EventProceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 - Wollongong, Sydney, Aust
    Duration: 7 Dec 199812 Dec 1998

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