Review on Medical Applications of Manganese Oxide (Mn²⁺, Mn³⁺, and Mn⁴⁺) Magnetic Nanoparticles

Figure 6

(a, b) TEM images of α-MnO₂ and β-MnO₂ at 160 and 200°C; (c, d) HR TEM images of α-MnO₂ and β-MnO₂ at 160 and 200°C (reprinted with permission from [57], Elsevier, 2010).

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(b)

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