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. 2020 Sep 29;10:16026. doi: 10.1038/s41598-020-73090-4

Figure 2.

Figure 2

XRD patterns of the Fe3O4 nanospheres synthesized by solvothermal reaction at 200 °C for 10 h. The vertical lines at bottom are the standard diffraction peaks of Fe3O4 from JCPDS card No. 03-0863.