Figure 5

(a) Spin Rotation spectra measured with \(^{111}\)Cd in S2 sample of CoO after annealing (left) and respective Fast Fourier Transforms (right). The continuous lines represent the fit of theoretical functions to experimental data. (b) Temperature dependence of the quadrupole coupling frequency (\(\nu _Q\)), asymmetry parameter (\(\eta \)), and site fractions occupied by \(^{111}\)Cd probes