Cover Picture: Fe-Doped ZnO Nanoparticles: The Oxidation Number and Local Charge on Iron, Studied by 57Fe Mößbauer Spectroscopy and DFT Calculations (Chem. Eur. J. 10/2013)



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If produced by flame spray pyrolysis, more than 10% of Fe dopants can be introduced into the wurtzite lattice of ZnO nanoparticles. A combined experimental and theoretical Mößbauer spectroscopy study unambiguously assigns the Fe dopants as substitutional FeII ions, although the charge-dependent properties of the Fe dopants in ZnO are similar to those of Fe3+ ions. For more information see the Communication by T. Heine et al. on page 3287 ff.