Figure 3
ReflEXAFS spectra (blue line) with the best fit (red) collected at 0.2° and at high angle (0.32° or 0.315°) for samples 1, 2 and 3. In order to present signals with comparable amplitudes the spectra in total reflection of samples 2 and 3 were multiplied by a factor of two and those at high angles by a factor of four. The spectra of the model compounds (NiO and NiAl2O4) taken in transmission mode are multiplied by −1. |