Research Article

Crystal Defects and Cation Redistribution Study on Nanocrystalline Cobalt-Ferri-Chromites by Positron Annihilation Spectroscopy

Figure 4

The lattice constant (a) and the radii of the tetrahedral ( ) and octahedral ( ) sites versus Cr3+ concentration (x).
272846.fig.004a
(a)
272846.fig.004b
(b)
272846.fig.004c
(c)