Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles

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Abstract

The hydrothermal synthesis of Fe3O4 nanoparticles (NPs) (< 50 nm) from mixed FeCl3 / FeCl2 precursor solution at pH ∼ 12 has been confirmed using complementary characterisation techniques of transmission electron microscopy and X-ray diffractometry. Off-axis electron holography allowed for visualisation of their single domain (SD) nature, as well as inter-particle interactions, with the latter attributed to explain the pseudo-SD/multi-domain behaviour demonstrated by bulk magnetic measurements. © Published under licence by IOP Publishing Ltd.

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Almeida, T. P., Muxworthy, A. R., Williams, W., Kasama, T., & Dunin-Borkowski, R. E. (2014). Hydrothermal synthesis, off-axis electron holography and magnetic properties of Fe3O4 nanoparticles. In Journal of Physics: Conference Series (Vol. 522). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/522/1/012062

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