Figure 2

(a,b) Scanning electron microscopy images of T₁-CoMn₂O₄ and T₂-CoMn₂O₄ and (c,d) transmission electron microscopy images of T₁-CoMn₂O₄ and T₂-CoMn₂O₄ with particle size distribution (inset). High-resolution transmission electron microscopy images and the corresponding fast Fourier transform of (e) T₁-CoMn₂O₄ and (f,g) T₂-CoMn₂O₄.