Figure 3 | Scientific Reports

Figure 3

From: Crystalline and magnetic properties of CoO nanoparticles locally investigated by using radioactive indium tracer

Figure 3

(a) PAC spectra and corresponding fast Fourier transform (FFT) measured with \(^{111}\)Cd in sample S2 at different temperatures. Continuous lines represent the fit of theoretical functions to experimental data. Note that above 250 K no modulation of PAC spectra was observed. (b) Temperature dependence of the quadrupole coupling frequency (\(\nu _Q\)), asymmetry parameter (\(\eta \)) and site fractions occupied by \(^{111}\)Cd probes. Arrow lines are guide to the eye indicating the sequence of temperature. PAC spectra and hyperfine parameters between the 10–295 K range are representative of sample S1

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