Also, the magnetocrystalline anisotropy constant ( K e ), estimated using the Néel-Brownian relaxation equation ( see SI ), shows a decreasing trend as the Fe 3−δ O 4 magnetic domain becomes larger and more coherent upon applying MH cycles (see Fig.
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Facile transformation of FeO/Fe<sub>3</sub>O<sub>4</sub> core-shell nanocubes to Fe<sub>3</sub>O<sub>4</sub> via magnetic stimulation.
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