Figure 3.
TEM and EDX mapping of Fe3O4 NPs doped by Y3+ ions. (A) Fe3O4 (W1), (B) 0.1% Y3+-doped Fe3O4 (Y1), (C) 1% Y3+-doped Fe3O4 (Y2), and (D) 10% Y3+-doped Fe3O4 (Y3) MNPs.
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