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Properties of synthesized magnetic nanocrystals. (a) HRTEM image showing 10-nm cores; inset, image of a single nanocrystal showing crystal lattice fringes; scale bar: 10 nm. (b) Hysteresis loop of synthesized magnetite cores (alongside those of magnetic polymer composites) showing high Msat and negligible remanence. (c) X-ray diffraction of magnetite cores. Measured spectrum for synthesized cores appears above calculated diffraction peaks for magnetite.
