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. 2015 Mar 13;5:9094. doi: 10.1038/srep09094

Figure 4. ZFC and FC curves with different doping concentrations.

Figure 4

The applied field is 50 Oe. (a) 2 at%; (b) 6 at%; (c) 8 at%; and (d) 12 at% K-doped MnO2. The inset is the reverse susceptibility of corresponding samples.