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Synthesis of highly monodisperse and superparamagnetic nanoparticles with near-theoretical possible magnetic susceptibility optimized for MPI. TEM image (scale bar 200nm), electron diffraction pattern (scale bar: 2 1/nm), and size distribution histogram of the optimized phase pure NPs synthesized by thermal decomposition of iron oleate in the presence of oleic acid surfactant, followed by their controlled oxidation in the presence of oxygen.
