Journal of Nanomaterials / 2019 / Article / Fig 3

Research Article

Negative Surface Energies of Nickel Ferrite Nanoparticles under Hydrothermal Conditions

Figure 3

Free energies of formation of an octahedral nickel ferrite particle as a function of particle size for various (a) temperature and (b) pH values. The size of the nickel ferrite clusters associated with the free energy minima depends sensitively on temperature and pH.

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