Journal of Nanomaterials / 2019 / Article / Fig 1

Research Article

Negative Surface Energies of Nickel Ferrite Nanoparticles under Hydrothermal Conditions

Figure 1

Slab models with the lowest (111) surface formation energies. The most stable surfaces expose (a) tetrahedral and (b) octahedral Ni/Fe cations. The red balls represent O atoms, and the grey and brown are Ni and Fe, respectively.

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