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Multiferroic bismuth ferrite (BiFeO3) nanopowders have been obtained at room temperature by mechanochemical synthesis.Depending on the post-synthesis processing the nanopowders exhibited dierences in the mean sizes, presence of amorphous layer and/or secondary phases.Extended magnetic study performed for fresh, annealed and hot-pressed nanopowders revealed substantial improvement of the magnetic properties in the as-prepared powder.
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Szafraniak et al. (2014) studied this question.
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